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Rahman MS, Rahman M, Jolly YN, Hossain MK, Semme SA, Paray BA, Arai T, Yu J, Hossain MB. Heavy metals in afforested mangrove sediment from the world's largest delta: Distributional mapping, contamination status, risk assessment and source tracing. MARINE POLLUTION BULLETIN 2024; 203:116429. [PMID: 38705003 DOI: 10.1016/j.marpolbul.2024.116429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 04/23/2024] [Accepted: 04/25/2024] [Indexed: 05/07/2024]
Abstract
This study aims to assess seasonal and spatial variations, contamination status, ecological risks, and metal sources (Ni, Pb, Cr, Cu, Mn, and Zn) in human-afforested mangrove sediments in a deltaic region. Five sampling locations were sampled during dry and wet seasons. Heavy metal concentrations followed the order: Mn > Zn > Ni > Cr > Cu > Pb. Metal loads, except Cu and Pb, were higher during the dry season, aligning with national and international recommendations. Sediment quality guidelines, contamination factor, geoaccumulation index, enrichment factors, and pollution load index indicated uncontaminated sediment in both seasons. Potential ecological risk assessment showed low risk conditions in all sites. However, modified hazard quotient indicated moderate pollution risk from all metals except Pb. Analysis suggests anthropogenic sources, particularly evident near shipbreaking yards in Sitakunda. While initially uncontaminated, ongoing metal influx poses a potential risk to mangrove ecosystems.
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Affiliation(s)
- Md Saifur Rahman
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Sonapur, 3814, Bangladesh
| | - Moshiur Rahman
- International Studies in Aquatic Tropical Ecology (ISATEC), University of Bremen, Bibliothekstraße 1, 28359 Bremen, Germany
| | - Yeasmin N Jolly
- Atmospheric and Environmental Chemistry Laboratory, Chemistry Division, Atomic Energy Centre, Dhaka, Bangladesh
| | - Md Kamal Hossain
- Soil and Environment Research Section, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh
| | - Sanjida Afrin Semme
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Sonapur, 3814, Bangladesh
| | - Bilal Ahamad Paray
- Department of Zoology, College of Science, King Saud University, 2455, Riyadh 11451, Saudi Arabia
| | - Takaomi Arai
- Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Jimmy Yu
- School of Engineering and Built Environment, Griffith University, Brisbane, QLD 4111, Australia
| | - M Belal Hossain
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Sonapur, 3814, Bangladesh; School of Engineering and Built Environment, Griffith University, Brisbane, QLD 4111, Australia.
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Rahman MH, Chen T, Yeasmin SM, Khan MHR, Chakraborty TK, Rahaman MH, Rahman MA. Receptor model-based sources and risk assessment of metals in sediment of the coastal construction-oriented aquatic system in Bangladesh. MARINE POLLUTION BULLETIN 2024; 202:116383. [PMID: 38677105 DOI: 10.1016/j.marpolbul.2024.116383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Revised: 04/12/2024] [Accepted: 04/13/2024] [Indexed: 04/29/2024]
Abstract
Metal pollution in sediment from construction areas raises ecological and health concerns, yet source-based sediment pollution in Bangladesh remains understudied. Our investigation focused on fifteen locations in the Kohelia River and the coastal regions near the Matarbari projects (Matarbari Power Plant, Matarbari Deep Seaport), assessing metal concentrations' sources and impacts on ecology and human well-being. Sediment quality indices indicated high Cd and Cr contamination, with sites near Matarbari projects being the most polluted. The positive matrix factorization model identified three anthropogenic sources and mixed sources. Matarbari projects contributed significantly to As (67.9 %), Mn (50.25 %), Cd (48.35 %), and Cr (41.0 %), while ship-breaking yards contributed Fe (58.0 %), Zn (55.5 %), Pb (53.8 %), and Cu (36.1 %). Ecological indices showed different impacts on aquatic life from metal pollution, but cancer risk levels stayed below the threshold set by the US Environmental Protection Agency. These findings underscore the need for targeted measures to address metal pollution.
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Affiliation(s)
- Md Habibur Rahman
- Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China; Department of Fisheries and Marine Bioscience, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Tianran Chen
- Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
| | - Syeda Maksuda Yeasmin
- Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China; Department of Fisheries and Marine Bioscience, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Md Hafijur Rahaman Khan
- Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tapos Kumar Chakraborty
- Department of Environmental Science and Technology, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Md Hasibur Rahaman
- Department of Environmental Science and Technology, Jashore University of Science and Technology, Jashore 7408, Bangladesh; Institute for Smart City of Chongqing University in Liyang, Chongqing University, Jiangsu 213300, China
| | - Md Anisur Rahman
- Department of Fisheries and Marine Bioscience, Jashore University of Science and Technology, Jashore 7408, Bangladesh
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Aurnab IT, Uddin MJ, Kabir A. Risk assessment of four toxic heavy metals in terrestrial and aquatic ecosystems around BSCIC tannery industrial estate of Savar, Dhaka, Bangladesh. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:34124-34143. [PMID: 38696010 DOI: 10.1007/s11356-024-33503-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 04/25/2024] [Indexed: 05/31/2024]
Abstract
The shifting of tannery industries from Hazaribagh to Savar adjacent to Dhaleshwari River might have inevitable adverse impacts, especially the heavy metal contamination of both terrestrial and aquatic ecosystems. The study was carried out to investigate the concentrations of four heavy metals in the soil, water, and plant samples collected from around Dhaleshwari River adjacent to the Bangladesh Small & Cottage Industries Corporation Tannery Industrial Estate, Dhaka. This study revealed that average concentrations of cadmium and chromium in soil exceeded the maximum permissible limit of World Health Organization (1996) and average concentrations of lead, cadmium, and chromium in water exceeded the maximum permissible limit of World Health Organization (2011) and Environmental Conservation Rules (1997). The average concentrations of lead, cadmium, and chromium in the roots and shoots of both Eichhornia crassipes and Cynodon dactylon exceeded the maximum permissible limit of Food and Agriculture Organization/ World Health Organization (2016). Ecological risk assessment using indices model for soil pollution indicated that soil is mostly contaminated with cadmium and chromium which can pose strong ecological risk Health risk assessment using indices model for water pollution revealed the high degree of contamination and unacceptable non-carcinogenic risk and carcinogenic risk for adults as well as children through ingestion of water. Average bioconcentration factor and bioaccumulation factor were higher in Eichhornia crassipes than Cynodon dactylon for lead, cadmium, and chromium. Average translocation factor was also higher in Eichhornia crassipes for all the metals except cadmium. It is suggested remedial and mitigation measures be instituted to control environmental degradation of the newly established Tannery Industrial Estate.
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Affiliation(s)
- Intehum Taufique Aurnab
- Department of Environmental Science, Bangladesh University of Professionals, Dhaka, 1216, Bangladesh
| | - Md Jashim Uddin
- Department of Soil, Water & Environment, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Alamgir Kabir
- Department of Environmental Science, Bangladesh University of Professionals, Dhaka, 1216, Bangladesh.
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Jewel MAS, Zinat A, Khatun B, Akter S, Chandra Barman A, Satter A, Haque MA. Ecological and public health risk assessment of potentially toxic elements in the surface sediments of the Pasur river estuary, Bangladesh. Heliyon 2024; 10:e29278. [PMID: 38665555 PMCID: PMC11043945 DOI: 10.1016/j.heliyon.2024.e29278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 03/18/2024] [Accepted: 04/03/2024] [Indexed: 04/28/2024] Open
Abstract
Potentially toxic elements (PTEs) in the surface sediments of the Pasur river estuary was investigated to assess its distribution, potential sources, and current dangers to ecological and public health. The Pasur River is a tidal, meandering, perennial river in south-western Bangladesh with a considerable number of fisheries and industrial activities. Sediment samples were collected from seven sampling points from January to December 2022 to assess the contamination level of six potentially toxic elements (Pb, Cr, Cd, As, Cu and Zn). Flame Atomic Absorption Spectrophotometer was utilized to detect the concentration of PTEs by following some sequential analytical procedure. Concentration of PTEs followed the reducing trend of Zn > Cr > Pb > As > Cu > Cd with the mean value of 61.04 > 49.15 > 26.58 > 10.28 > 6.28 > 1.59 mg/kg, respectively. The principle component and cluster analyses justified the anthropogenic source of the studied PTEs. The mean values of contamination factor (CF), geo-accumulation index (Igeo) and enrichment factor (EFc) showed that Pb and Cd were highly responsible for sediment (uncontaminated to moderate) contamination. Pollution load index (PLI) indicated higher pollution of sediments near the port areas. Potential ecological risk index (PERI) indicated low to moderate risks due to the contaminated sediment. However, the contamination of sediment was not associated with the non-carcinogenic (HQderm and HI < 1) and carcinogenic (CRderm < 10-6) risks due to the dermal contact. Although the risks were within the tolerable limit, regular monitoring is suggested to reduce the risk of PTEs contamination.
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Affiliation(s)
- Md. Abu Sayed Jewel
- Department of Fisheries, Faculty of Agriculture, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Afia Zinat
- Department of Fisheries, Faculty of Agriculture, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Bithy Khatun
- Department of Fisheries, Faculty of Agriculture, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Sumaiya Akter
- Department of Fisheries, Faculty of Agriculture, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Arun Chandra Barman
- Department of Oceanography and Blue Economy, Faculty of Fisheries, Habiganj Agricultural University, Habiganj, 3300, Bangladesh
| | - Abdus Satter
- Bangamata Sheikh Fojilatunnesa Mujib Science & Technology University, Melandah, Jamalpur, Bangladesh
| | - Md. Ayenuddin Haque
- Department of Oceanography and Blue Economy, Faculty of Fisheries, Habiganj Agricultural University, Habiganj, 3300, Bangladesh
- Bangladesh Fisheries Research Institute, Mymensingh, 2201, Bangladesh
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Hasan AB, Reza AHMS, Siddique MAB, Akbor MA, Nahar A, Hasan M, Uddin MR, Zaman MN, Islam I. Origin, spatial distribution, sediment contamination, ecological and health risk evaluation of trace metals in sediments of ship breaking area of Bangladesh. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133214. [PMID: 38101007 DOI: 10.1016/j.jhazmat.2023.133214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 11/17/2023] [Accepted: 12/07/2023] [Indexed: 12/17/2023]
Abstract
Eleven trace metals (Cd, Cr, Fe, Mn, Cu, Ni, Co, Zn, As, Pb, and Ag) in sediments of Bangladesh's ship breaking area were measured by an atomic absorption spectrometer to determine origin, contamination extent, spatial distributions, and associated ecological and human health hazards. This study found considerable quantities of Pb, Cd, Mn, Zn, and Cu when compared with standards and high levels of Pb, Cd, Zn, Cu, As, and Ag contamination according to pollution evaluation indices. Different indices indicate most of the sampling sites were highly polluted. However, spatial distribution maps indicate that trace metals were predominantly deposited in the northern and southern region. The ecological risk index revealed that Cd has the highest while Pb and As had moderate risk. Based on the health index values, Zn for both adults and children were higher than the safe limit while Mn, Pb, Cr, As, Fe, Cu, Ni, and Co for children were close to the threshold. The mean total carcinogenic risk values of Cr, As, and Ni for children and Ni for adults exceeded the permissible threshold. The cancer risk possibilities were further assessed using Monte Carlo simulation. Most trace metals have anthropogenic origins, which were attributed to ship breaking activities.
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Affiliation(s)
- Asma Binta Hasan
- Department of Geology and Mining, University of Rajshahi, Rajshahi 6205, Bangladesh
| | - A H M Selim Reza
- Department of Geology and Mining, University of Rajshahi, Rajshahi 6205, Bangladesh.
| | - Md Abu Bakar Siddique
- Institute of National Analytical Research and Service (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dkaka 1205, Bangladesh
| | - Md Ahedul Akbor
- Institute of National Analytical Research and Service (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dkaka 1205, Bangladesh
| | - Aynun Nahar
- Institute of National Analytical Research and Service (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dkaka 1205, Bangladesh
| | - Mehedi Hasan
- Institute of National Analytical Research and Service (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dkaka 1205, Bangladesh
| | - Md Ripaj Uddin
- Institute of Mining, Mineralogy and Metallurgy (IMMM), Bangladesh Council of Scientific and Industrial Research (BCSIR), Joypurhat, Bangladesh
| | - Mohammad Nazim Zaman
- Institute of Mining, Mineralogy and Metallurgy (IMMM), Bangladesh Council of Scientific and Industrial Research (BCSIR), Joypurhat, Bangladesh
| | - Iftekharul Islam
- Department of Geology and Mining, University of Rajshahi, Rajshahi 6205, Bangladesh
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Islam MN, Ganguli S, Saha N, Mamun Huda M, Hoque MA, Peng C, Ng JC. Uncovering the impact of mega-scale shipbreaking yards on soil and crop quality in Bangladesh: A spatiotemporal dynamics and associated health risks of metal/loid contamination. JOURNAL OF HAZARDOUS MATERIALS 2024; 464:132931. [PMID: 37979427 DOI: 10.1016/j.jhazmat.2023.132931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/18/2023] [Accepted: 11/02/2023] [Indexed: 11/20/2023]
Abstract
The uncontrolled release of harmful metal/loids from mega-scale shipbreaking activities in Bangladesh is a significant concern. This study investigated the impact of shipbreaking activities on soil and crop quality and human health in relation to metal/loid contamination. This work covered an area of 1221 km2 surrounding the shipbreaking yards in Chittagong during the wet and dry seasons between 2019 and 2020. Amongst the sixteen elements measured, the concentrations of Pb, Cd, As, V, Cr, Mn, Cu, Zn, Fe, Co, Ni, and Sn in the soil, rice, and vegetables from the four exposure sites were significantly higher compared to the control site in both seasons. Soil pollution indices indicated moderate to higher contamination levels of Pb, Zn, Cd, As, and Se in 30-50% of soil, supporting their accumulation in food crops. Source apportionment analysis identified uncontrolled shipwrecking operations as the primary anthropogenic activity mainly contributing to metal/loid pollution. Health risk analysis showed inorganic arsenic (estimated), Cd, and Pb in food crops could pose potential health threats to the general population. Spinach leaf and gourd were identified as the highest-risk contributing vegetables in the dry and wet seasons. These findings help to inform management strategies to protect agroecosystems and public health.
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Affiliation(s)
- Md Nazrul Islam
- QAEHS, Queensland Alliance for Environmental Health Sciences, The University of Queensland, Brisbane, Queensland 4102, Australia; Department of Applied Chemistry and Chemical Engineering, University of Chittagong, Chittagong 4331, Bangladesh
| | - Sumon Ganguli
- Biomaterials Research Laboratory, Department of Applied Chemistry and Chemical Engineering, University of Chittagong, Chittagong 4331, Bangladesh
| | - Narottam Saha
- Center for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, QLD, Australia
| | - M Mamun Huda
- Institute for Social Science Research, The University of Queensland, Brisbane, QLD, Australia; Rural Health Research Institute (RHRI), Charles Sturt University, Orange, NSW, Australia.
| | - Md Ashraful Hoque
- Department of Applied Chemistry and Chemical Engineering, University of Chittagong, Chittagong 4331, Bangladesh
| | - Cheng Peng
- QAEHS, Queensland Alliance for Environmental Health Sciences, The University of Queensland, Brisbane, Queensland 4102, Australia
| | - Jack C Ng
- QAEHS, Queensland Alliance for Environmental Health Sciences, The University of Queensland, Brisbane, Queensland 4102, Australia.
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Chi H, Liu X, Yang X, Zhang R, Xia T, Sun Y, Hu K, Hao F, Liu Y, Yang S, Deng Q, Wen X. Risk assessment and source identification of soil heavy metals: a case study of farmland soil along a river in the southeast of a mining area in Southwest China. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024; 46:39. [PMID: 38227107 DOI: 10.1007/s10653-023-01803-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 11/21/2023] [Indexed: 01/17/2024]
Abstract
To investigate the heavy metals (HMs) contamination of surface farmland soil along the river in the southeast of a mining area in southwest China and identify the contamination sources, 54 topsoil samples were collected and the concentrations of seven elements (Zn, Ni, Pb, Cu, Hg, Cr, and Co) were determined by inductively coupled plasma optical emission spectrometry (ICP-OES) and atomic fluorescence spectrometry (AFS). The geo-accumulation index ([Formula: see text]) and comprehensive potential ecological risk index ([Formula: see text]) were used for analysis to determine the pollution degree of HMs and the risk level of the study area. Meanwhile, the Positive Matrix Factorization (PMF) model was combined with a variety of statistical methods to determine the sources of HMs. To explore the influence of the river flowing through the mining area on the concentrations of HMs in the farmland soil, 15 water samples were collected and the concentrations of the above seven elements were determined. The results showed that the concentrations of Pb, Cu, and Zn in soil all exceeded the risk screening value, and Pb in soil of some sampling sites exceeded control value of "Agricultural Land Soil Pollution Risk Control Standard".[Formula: see text] showed that Pb was heavily contaminated, while Cu and Zn were moderately contaminated. RI showed that the study area was at moderate risk. PMF and various statistical methods showed that the main source of HMs was the industrial source. In the short term, the river flowing through the mine has no significant influence on the concentration of HMs in the soil. The results provide a reference for the local government to control contamination and identify the sources of HMs.
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Affiliation(s)
- Huajian Chi
- College of Pharmacy, Dali University, Dali, 671000, Yunnan, China
| | - Xin Liu
- College of Pharmacy, Dali University, Dali, 671000, Yunnan, China
| | - Xiaofang Yang
- College of Chemistry, Sichuan University, Chengdu, 610064, Sichuan, China
| | - Rui Zhang
- College of Pharmacy, Dali University, Dali, 671000, Yunnan, China
| | - Ting Xia
- College of Pharmacy, Dali University, Dali, 671000, Yunnan, China
| | - Yiping Sun
- College of Pharmacy, Dali University, Dali, 671000, Yunnan, China
| | - Kan Hu
- College of Pharmacy, Dali University, Dali, 671000, Yunnan, China
| | - Fangfang Hao
- College of Pharmacy, Dali University, Dali, 671000, Yunnan, China
| | - Yong Liu
- College of Pharmacy, Dali University, Dali, 671000, Yunnan, China
| | - Shengchun Yang
- College of Pharmacy, Dali University, Dali, 671000, Yunnan, China
| | - Qingwen Deng
- College of Pharmacy, Dali University, Dali, 671000, Yunnan, China
| | - Xiaodong Wen
- College of Pharmacy, Dali University, Dali, 671000, Yunnan, China.
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Khan Q, Zahoor M, Salman SM, Wahab M, Bari WU. Phytoremediation of toxic heavy metals in polluted soils and water of Dargai District Malakand Khyber Pakhtunkhwa, Pakistan. BRAZ J BIOL 2024; 84:e265278. [DOI: 10.1590/1519-6984.265278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 09/11/2022] [Indexed: 11/05/2022] Open
Abstract
Abstract The contamination of natural resources with heavy metals released from steel mills is the primary cause of soil and water pollution in the Dargai Malakand, located on the northern side of Pakistan. Therefore, the present study was aimed to determine the level of heavy metals in soil and water samples of this area. The wild plant growing (nine native plants: Pteris vittata, Populus nigra, Eucalyptus camaldulensis, Persicaria maculosa, Arundo donax, Xanthium strumarium, Verbascum thapsus, Ricinus communis and Parthenium hysterophorus) there were then tested for their phytoremediation capabilities which is an environmentally friendly, generally utilized, and low-cost approach to eliminate heavy metals from polluted soils and water. Soil, water, and effluent samples were taken from the contaminated sites of seven steel mills in Dargai District Malakand and subjected to heavy metals analysis. Based on bioconcentration factor (BCF) and translocation factor (TF) calculated, The highest BCF for zinc was recorded for Pteris vittata roots (3.93), while the lowest value was observed for Verbascum thapsus leaves (0.306). Pteris vittata root showed the highest BCF for iron (1.618), while Ricinus communis leaves showed the lowest (0.023). The highest BCF value for chromium was highest for Populus nigra roots (0.717), while the lowest value was recorded for Persicaria maculosa leaves (0.031). For the selected metals; Fe, Zn and Cr the highest TF were recorded for Pteris vittata (0.988), Verbascum thapsus (0.944) and Xanthium strumairum (0.968) respectively. Therefore, it is recommended that these plants should be grown near to steel mills to reclaim heavy metals from industrial effluent, polluted soil as well as from polluted water.
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Affiliation(s)
- Q. Khan
- Islamia College University, Pakistan
| | | | | | - M. Wahab
- Islamia College University, Pakistan
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Ning W, Hu Y, Feng S, Cao M, Luo J. Ecological risk assessment and transmission of soil heavy metals in pastoral areas of the Tibetan plateau based on network environment analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167197. [PMID: 37741383 DOI: 10.1016/j.scitotenv.2023.167197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 09/16/2023] [Accepted: 09/16/2023] [Indexed: 09/25/2023]
Abstract
The Qinghai-Tibet Plateau is distinguished by its diverse ecosystems and biodiversity, which are highly dependent on their soil. In this study, a comprehensive analysis was conducted to assess the ecological risks in Maqin County, located on the Qinghai-Tibet Plateau, along with the local background values of soil elements, level of element enrichment, and source appointment of soil elements. The findings show that the background soil element levels in Maqin County were greater than the average soil content values in China. The soils in the study area exhibited pollution levels ranging from weak to moderate. The positive matrix factorization (PMF) model was employed to successfully categorized soil elements into four sources: F1 (natural sources), F2 (grazing sources), F3 (volcanic and rock fracture sources), and F4 (intrusive and deep rock source). Based on the characteristics of the ecological communities and the network environmental analysis model, ecological risks were directly introduced through vegetation and soil microorganisms, with subsequent transmission to other components of the ecosystem through the food chain. The integrated risks associated with vegetation, herbivores, soil microorganisms, and carnivores were 0.0106, 0.00193, 0.0282, and 0.00132, respectively. Notably, soil microorganisms were found to be the primary contributors to the total ecological risk in the study area. Furthermore, network environmental analysis and human health risk models revealed that F1, F2, F3, and F4 accounted for 16.85 %, 8.90 %, 21.76 %, and 52.49 % of the input risk of vegetation and soil microorganisms, respectively. Particularly, F4 emerged as the largest contributor to human health risks. This study provides valuable information for the preservation of the ecological environment in pastoral areas, contributing to the global promotion of sustainable ecological practices.
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Affiliation(s)
- Wenjing Ning
- School of Environment, Nanjing University, Nanjing, China.
| | - Yuwei Hu
- College of Resources and Environment, Yangtze University, Wuhan, China
| | - Siyao Feng
- College of Resources and Environment, Yangtze University, Wuhan, China
| | - Min Cao
- University of Leicester, University Road, Leicester LE1 7RH, United Kingdom
| | - Jie Luo
- College of Resources and Environment, Yangtze University, Wuhan, China.
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Islam MS, Islam MT, Antu UB, Saikat MSM, Ismail Z, Shahid S, Islam ARMT, Ali MM, Al Bakky A, Ahmed S, Ibrahim KA, Al-Qthanin RN, Idris AM. Contamination and ecological risk assessment of Cr, As, Cd and Pb in water and sediment of the southeastern Bay of Bengal coast in a developing country. MARINE POLLUTION BULLETIN 2023; 197:115720. [PMID: 37939519 DOI: 10.1016/j.marpolbul.2023.115720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/18/2023] [Accepted: 10/24/2023] [Indexed: 11/10/2023]
Abstract
Safe levels of heavy metals in the surface water and sediment of the eastern Bay of Bengal coast have not been universally established. Current study characterized heavy metals such as arsenic (As), chromium (Cr), cadmium (Cd) and lead (Pb) in surface water and sediments of the most important fishing resource at the eastern Bay of Bengal coast, Bangladesh. Both water and sediment samples were analyzed using inductively coupled plasma mass spectrometer. Considering both of the seasons, the mean concentrations of Cr, As, Cd, and Pb in water samples were 33.25, 8.14, 0.48, and 21.14 μg/L, respectively and in sediment were 30.47, 4.48, 0.20, and 19.98 mg/kg, respectively. Heavy metals concentration in water samples surpassed the acceptable limits of usable water quality, indicating that water from this water resource is not safe for drinking, cooking, bathing, and any other uses. Enrichment factors also directed minor enrichment of heavy metals in sediment of the coast. Other indexes for ecological risk assessment such as pollution load index (PLI), contamination factor (CF), geoaccumulation index (Igeo), modified contamination degree (mCd), and potential ecological risk index (PERI) also indicated that sediment of the coastal watershed was low contamination. In-depth inventorying of heavy metals in both water and sediment of the study area are required to determine ecosystem health for holistic risk assessment and management.
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Affiliation(s)
- Md Saiful Islam
- Department of Soil Science, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh.
| | - Md Towhidul Islam
- Department of Soil Science, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh
| | - Uttam Biswas Antu
- Department of Soil Science, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh
| | - Md Sadik Mahmud Saikat
- Department of Soil Science, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh
| | - Zulhilmi Ismail
- Centre for River and Coastal Engineering (CRCE), Universiti Teknologi Malaysia (UTM), 81310 Johor Bahru, Malaysia; School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), 81310 Johor Bahru, Malaysia.
| | - Shamsuddin Shahid
- Centre for River and Coastal Engineering (CRCE), Universiti Teknologi Malaysia (UTM), 81310 Johor Bahru, Malaysia; School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), 81310 Johor Bahru, Malaysia
| | - Abu Reza Md Towfiqul Islam
- Department of Disaster Management, Begum Rokeya University, Rangpur, Bangladesh; Department of Development Studies, Daffodil International University, Dhaka 1216, Bangladesh
| | - Mir Mohammad Ali
- Department of Aquaculture, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh
| | - Abdullah Al Bakky
- Agriculture Wing, Bangladesh Jute Research Institute, Dhaka 1207, Bangladesh
| | - Sujat Ahmed
- Environment, Center for People & Environ (CPE), Dhaka 1207, Bangladesh
| | - Khalid A Ibrahim
- Department of Biology, College of Science, King Khalid University, Abha 62529, Saudi Arabia; Center for Environment and Tourism Studies and Research, King Khalid University, Abha 62529, Saudi Arabia
| | - Rahmah N Al-Qthanin
- Department of Biology, College of Science, King Khalid University, Abha 62529, Saudi Arabia; Center for Environment and Tourism Studies and Research, King Khalid University, Abha 62529, Saudi Arabia
| | - Abubakr M Idris
- Department of Chemistry, College of Science, King Khalid University, Abha 62529, Saudi Arabia; Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 62529, Saudi Arabia.
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11
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Ayyamperumal R, Kumari K, Gandhi MS, Huang X, Chengjun Z, Nazir N, Li F, Das P. Environmental hazard assessment and metal contamination in coastal sediments. CHEMOSPHERE 2023; 338:139434. [PMID: 37487978 DOI: 10.1016/j.chemosphere.2023.139434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/20/2023] [Accepted: 07/04/2023] [Indexed: 07/26/2023]
Abstract
In order to reduce contamination levels from diverse sources, it is important to understand the factors affecting the natural ecosystems that are impacted by coastal and marine pollution. In this study, we used GIS and remote sensing techniques to investigate and evaluate the distribution of heavy metals (Fe, Mn, Zn, Cr, Pb, Co, and Cu) in surface sediments along Tamil Nadu's East Coast (from Besant Nagar to Sathurangapattinam). The CF and Igeo of metals indicate that sediments contain no evidence of Fe, Mn, or Zn metal pollution in the sediments, with only mild contamination from Co, Cu, and Pb. In contrast, the sediment samples were found to be significantly contaminated with Cr. Heavy metal contamination occurs in the following order, according to our research: Cr > Pb > Cu > Co > Mn > Zn > Fe. Except for sites 8, 10, 11, and 13, where PLI>1 implies that there is no pollution in this area, the PLI values show that most of the locations are contaminated. The ecological risk index (ERI) values for five metals in the study areas are as follows: Cr > Pb > Cu > Mn > Zn. The sediment samples fall into the low-risk and highly polluted to dangerous sediment categories for SPI, according to the Risk index (RI). Based on the Mean Effect Range-Median Quotient (M-ERM-Q), Cu, Pb, Zn, and Cr metals in the research region have a 9-21% probability of being harmful. Statistical approaches show that the majority of heavy metals in sediments are of natural origin. The spatial distribution of heavy metals in surface sediments provides the conceptual framework for practical strategies to protect coastal areas. Many shreds of evidence indicate that anthropogenic inputs from the surrounding land area are primarily responsible for the deposition of these heavy metals in the coastal zone.
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Affiliation(s)
- Ramamoorthy Ayyamperumal
- MOE Key Laboratory of Mineral Resources in Western China, College of Earth Sciences, Lanzhou University, Lanzhou, Gansu Province- 730000, PR China; MOE Key Laboratory of Western China's Environmental System, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou-730000, PR China.
| | - Kajal Kumari
- Department of Earth Sciences, IISER, Kolkata, West Bengal- 700109, India
| | - M Suresh Gandhi
- Department of Geology, School of Earth and Atmospheric Sciences, University of Madras,Guindy Campus, Chennai-600025, India
| | - Xiaozhong Huang
- MOE Key Laboratory of Western China's Environmental System, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou-730000, PR China
| | - Zhang Chengjun
- MOE Key Laboratory of Mineral Resources in Western China, College of Earth Sciences, Lanzhou University, Lanzhou, Gansu Province- 730000, PR China
| | - Nusrat Nazir
- MOE Key Laboratory of Mineral Resources in Western China, College of Earth Sciences, Lanzhou University, Lanzhou, Gansu Province- 730000, PR China
| | - Fengjie Li
- School of History and Culture, Lanzhou University, Lanzhou, Gansu Province-730000.PR China
| | - Priyanko Das
- School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, PR China
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12
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Zhang L, Guo Y, Xiao K, Pan F, Li H, Li Z, Xu H. Extreme rainstorm reshuffles the spatial distribution of heavy metals and pollution risk in sediments along the mangrove tidal flat. MARINE POLLUTION BULLETIN 2023; 194:115277. [PMID: 37480789 DOI: 10.1016/j.marpolbul.2023.115277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 07/24/2023]
Abstract
Mangroves as typical blue carbon ecosystems exhibit a high level of heavy metal accumulation capability. In this study, we investigated how extreme rainstorm effects the spatial variability and pollution risk of sediment heavy metals (i.e., Fe, Mn, Cr, Cu, Zn, Cd, Pb, As and Hg) at different compartments of a typical tidal flat, including the bare mudflat, mangrove zone, and tidal creek in Shenzhen Bay, China. The results showed that the extreme rainstorm can change the sediment particle size, which further regulated the spatial distribution, and source-sink pattern of heavy metals. Due to the strong rainstorm flushing, the concentrations of most heavy metals increased toward the sea and the comprehensive pollution level increased by 8.3 % after the extreme rainstorm. This study contributes to better understanding of how extreme rainstorm regulates heavy metal behavior in mangrove sediments to achieve sustainable development of mangroves under the pressures of extreme weather events.
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Affiliation(s)
- Licong Zhang
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Yuehua Guo
- CCCC-FHEC Ecological Engineering Co. Ltd., Shenzhen 518107, PR China
| | - Kai Xiao
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China.
| | - Feng Pan
- College of the Environment & Ecology, Xiamen University Xiamen 361102, PR China
| | - Hailong Li
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Zhenyang Li
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Hualin Xu
- Guangdong Neilingding Futian National Nature Reserve, Shenzhen 518048, PR China
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13
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Obluchinskaya ED, Pozharitskaya ON, Gorshenina EV, Zakharov DV, Flisyuk EV, Terninko II, Generalova YE, Shikov AN. Arctic Edible Brown Alga Fucus distichus L.: Biochemical Composition, Antiradical Potential and Human Health Risk. PLANTS (BASEL, SWITZERLAND) 2023; 12:2380. [PMID: 37376005 DOI: 10.3390/plants12122380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/10/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023]
Abstract
Fucus distichus L. is the dominant canopy-forming macroalga in the rocky intertidal areas of the Arctic and Subarctic. In the present study, the impact of the geographic location of F. distichus collected in the Baffin Sea (BfS), Norwegian Sea (NS), White Sea (WS), and Barents Sea (BS) on the variations in biochemical composition, antiradical properties, and health risk was evaluated. The accumulation of main carbohydrates (fucoidan, mannitol, and alginic acid) varied from 335 mg/g dry weight (DW) in NS to 445 mg/g DW in BS. The highest level of the sum of polyphenols and flavonoids was found in samples of F. distichus from WS and was located in the following ranking order: BS < BfS < NS < WS. The 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity of seaweed is correlated with its phenolic content. It is notable that in most Arctic F. distichus samples, Cd, Cr, Pb, and Ni were not detected or their concentrations were below the limit of quantification. According to calculated targeted hazard quotient and hazard index values, all studied samples of Arctic F. distichus are safe for daily consumption as they do not pose a carcinogenic risk to the health of adults or children. The results of this study support the rationale for using Arctic F. distichus as a rich source of polysaccharides, polyphenols, and flavonoids with important antiradical activity. We believe that our data will help to effectively use the potential of F. distichus and expand the use of this algae as a promising and safe raw material for the food and pharmaceutical industries.
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Affiliation(s)
- Ekaterina D Obluchinskaya
- Murmansk Marine Biological Institute of the Russian Academy of Sciences (MMBI RAS), 17 Vladimirskaya Str., 183038 Murmansk, Russia
| | - Olga N Pozharitskaya
- Murmansk Marine Biological Institute of the Russian Academy of Sciences (MMBI RAS), 17 Vladimirskaya Str., 183038 Murmansk, Russia
| | - Elena V Gorshenina
- Murmansk Marine Biological Institute of the Russian Academy of Sciences (MMBI RAS), 17 Vladimirskaya Str., 183038 Murmansk, Russia
| | - Denis V Zakharov
- Murmansk Marine Biological Institute of the Russian Academy of Sciences (MMBI RAS), 17 Vladimirskaya Str., 183038 Murmansk, Russia
- Zoological Institute RAS (ZIN RAS), 1 Universitetskaya Embankment, 199034 Saint-Petersburg, Russia
| | - Elena V Flisyuk
- Department of Technology of Pharmaceutical Formulations, St. Petersburg State Chemical Pharmaceutical University, 14 Prof. Popov Str., 197376 Saint-Petersburg, Russia
| | - Inna I Terninko
- Core Shared Research Facilities "Analytical Center", St. Petersburg State Chemical Pharmaceutical University, 14 Prof. Popov Str., 197376 Saint-Petersburg, Russia
| | - Yuliya E Generalova
- Core Shared Research Facilities "Analytical Center", St. Petersburg State Chemical Pharmaceutical University, 14 Prof. Popov Str., 197376 Saint-Petersburg, Russia
| | - Alexander N Shikov
- Murmansk Marine Biological Institute of the Russian Academy of Sciences (MMBI RAS), 17 Vladimirskaya Str., 183038 Murmansk, Russia
- Department of Technology of Pharmaceutical Formulations, St. Petersburg State Chemical Pharmaceutical University, 14 Prof. Popov Str., 197376 Saint-Petersburg, Russia
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14
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Haque MM, Reza AHMS, Hoyanagi K. Anthropogenic and natural contribution of potentially toxic elements in southwestern Ganges-Brahmaputra-Meghna delta, Bangladesh. MARINE POLLUTION BULLETIN 2023; 192:115103. [PMID: 37276710 DOI: 10.1016/j.marpolbul.2023.115103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/07/2023]
Abstract
Elemental composition, multivariate statistical analyses with the absolute principal component score-multiple linear regression (APCS-MLR) model, and different pollution indices in Upper and Lower Southwestern Ganges-Brahmaputra-Meghna (GBM) delta sediments were studied to characterize pollution, ecological risk and quantify potential toxic element sources of the area. Toxic metals concentrations were higher in Lower Delta and individual pollution indices showed Upper Delta was moderately polluted by arsenic, chromium, cobalt, copper and lead, and Lower Delta was moderately-strongly polluted by the same metals. Synergistic indices include Potential Ecological, Toxic, Nemerow, and Pollution Risk indices in Upper and Lower Delta sediment ranged from 47.17-128.07, 2.03-12.19, 29.92-65.42, 0.28-1.62, and 69.17-246.90, 8.00-13.47, 20.53-152.92, 1.18-1.58, indicated low and moderate risk pollution, respectively. Statistical models represent the metals dominantly originated from nature for Upper Delta, and both natural and anthropogenic activities contributed to Lower Delta sediment. The study found that the modern deposit in Lower Delta became more contaminated and thus enhanced ecological risk.
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Affiliation(s)
- Md Masidul Haque
- Department of Geology and Mining, University of Rajshahi, Rajshahi 6205, Bangladesh.
| | - A H M Selim Reza
- Department of Geology and Mining, University of Rajshahi, Rajshahi 6205, Bangladesh
| | - Koichi Hoyanagi
- Department of Geology, Institute of Science, Shinshu University, 3-1-1 Asahi, Matsumoto 390-8621, Japan
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15
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Weng BS, Wan RA, Yu RL, Hu GR, Yan Y, Lin CQ, Huang HB. Characteristics and provenances of rare earth elements and Nd isotopes in surface sediments of mangrove wetlands in the Jiulong River Estuary, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:73890-73898. [PMID: 37198366 DOI: 10.1007/s11356-023-27558-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 05/07/2023] [Indexed: 05/19/2023]
Abstract
Rare earth elements (REEs) and Nd isotopes are frequently employed to determine provenance, although their characteristics and provenances in the surface sediments of mangrove wetlands are rarely analyzed. In this study, a thorough analysis of the characteristics and provenances of REEs and Nd isotopes in the surface sediments of mangrove wetland in the Jiulong River Estuary was carried out. According to the results, the mean concentration of REEs in the surface sediments was 290.9 mg·kg-1, which was greater than the background value. Unpolluted to moderately polluted for La and Ce, as well as a moderate ecological risk for Lu, were indicated by the geoaccumulation index (Igeo) and potential ecological risk of individual factors ([Formula: see text]), respectively. The surface sediments showed substantial negative Eu anomalies but no significant Ce anomalies. The enrichments in LREE and flat HREE patterns are visible in the chondrite-normalized REE patterns. REEs in the surface sediments might be attributed to both natural sources (granite and magmatic rocks) and anthropogenic activities, including coal combustion, vehicle exhaust, steel smelting, and fertilizer, based on the (La/Yb)N-∑REE and ternary (La/Yb)N-(La/Sm)N-(Gd/Yb)N plots. The three-dimensional ∑LREE/∑HREE-Eu/Eu*-εNd(0) plot, when combined with the Nd isotope, further demonstrated that the REEs in the surface sediments appeared to have come from additional nonlocal potential sources.
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Affiliation(s)
- Bo-Sen Weng
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
- Institute of Environmental and Ecological Engineering, Huaqiao University, Xiamen, 361021, China
| | - Rui-An Wan
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
| | - Rui-Lian Yu
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China.
- Institute of Environmental and Ecological Engineering, Huaqiao University, Xiamen, 361021, China.
| | - Gong-Ren Hu
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
- Institute of Environmental and Ecological Engineering, Huaqiao University, Xiamen, 361021, China
| | - Yu Yan
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
- Institute of Environmental and Ecological Engineering, Huaqiao University, Xiamen, 361021, China
| | - Cheng-Qi Lin
- Key Laboratory of Fujian Universities for Environmental Monitoring, Xiamen, 361024, China
| | - Hua-Bin Huang
- Key Laboratory of Fujian Universities for Environmental Monitoring, Xiamen, 361024, China
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16
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Al-Kahtany K, Nour HE, El-Sorogy AS, Alharbi T. Ecological and health risk assessment of heavy metals contamination in mangrove sediments, Red Sea coast. MARINE POLLUTION BULLETIN 2023; 192:115000. [PMID: 37210984 DOI: 10.1016/j.marpolbul.2023.115000] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/23/2023]
Abstract
Due to the significance of mangroves for the diversity of marine and terrestrial life along the Red Sea coast, the present work aimed to evaluate the environmental and health risk of heavy metals in Wadi el-Gemal sediments. The findings of single and integrated indices demonstrated no significant pollution with Fe, Cu, Zn, Ni, Co, and Cd, while the sediments showed severe and minor enrichment with Mn and Cd, respectively, which might be attributed to the presence of some mining activities in the mountains near the study area. The possible carcinogenic and non-carcinogenic risks due to their dermal absorption from the sediments were analyzed and the findings demonstrated that the non-carcinogenic health hazards were within tolerable and safe limits. Moreover, the evaluation of chronic daily intake and the overall cancer risk (LCR) for adults and children for Pb and Cd both ruled out any current potential carcinogenic health risks.
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Affiliation(s)
- Khaled Al-Kahtany
- Geology and Geophysics Department, College of Science, King Saud University, Saudi Arabia
| | - Hamdy E Nour
- Geology Department Faculty of Science, Zagazig University, Zagazig, Egypt.
| | - Abdelbaset S El-Sorogy
- Geology and Geophysics Department, College of Science, King Saud University, Saudi Arabia
| | - Talal Alharbi
- Geology and Geophysics Department, College of Science, King Saud University, Saudi Arabia
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17
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Islam MN, Ganguli S, Saha N, Khatun F, Karim R, Tanvir EM, Howlader S, Siddique MAB, Peng C, Ng JC. Effects of shipwrecks on spatiotemporal dynamics of metal/loids in sediments and seafood safety in the Bay of Bengal. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 315:120452. [PMID: 36272605 DOI: 10.1016/j.envpol.2022.120452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 10/12/2022] [Accepted: 10/14/2022] [Indexed: 06/16/2023]
Abstract
Metal/loid pollution from shipwrecking activities has drawn significant concern due to their persistent threat to the marine ecosystem and human health. We investigated the spatiotemporal distribution, pollution characteristics, risks, sources, and potential impact of metal/loids in the sediments and seafood in the Bay of Bengal at nearby open beaching shipwrecking yards in Bangladesh. We collected 78 sediments and 208 seafood samples from the exposed and control sites from 2018 to 2020 during the dry and wet seasons. The concentrations of 16 elements, including cadmium, arsenic, lead, chromium, manganese, copper, zinc, iron, tin, antimony, nickel, cobalt, molybdenum, vanadium, selenium, and thallium were measured using validated inductively coupled plasma-mass spectrometry (ICP-MS) methods. Based on the pollution indices (enrichment factor, geoaccumulation index, pollution index, and pollution load index), lead, arsenic, cadmium, selenium, copper, zinc, and tin from the dry season showed higher contaminations compared to the wet and their concentrations were increased from 2018 to 2020 with seasonal fluctuations. Sediment cadmium and arsenic posed relatively higher and moderate ecological risks. Health risk analysis indicated that lead, cadmium, and inorganic arsenic (estimated) in seafood species pose a possible health threat to the general population. Further, there were possible ecological and health risks for the metal/loids in combination based on the ecological risk index in sediment and the hazard index in seafood, respectively. Source apportionment suggested that anthropogenic activities through uncontrolled shipwrecking operations over the last four decades were the largest polluting dominator, contributing 55-77% of the metal/loid concentrations. Therefore, the data may inform mitigation strategies for emission control at the shipwrecking yards to protect marine ecosystems and their local population.
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Affiliation(s)
- Md Nazrul Islam
- QAEHS, Queensland Alliance for Environmental Health Sciences, The University of Queensland, Brisbane, Queensland, 4102, Australia; Department of Applied Chemistry and Chemical Engineering, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Sumon Ganguli
- Biomaterials Research Laboratory, Department of Applied Chemistry and Chemical Engineering, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Narottam Saha
- Center for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, Australia
| | - Feroza Khatun
- Department of Environmental Science and Technology, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - Rezaul Karim
- Department of Environmental Science and Technology, Jashore University of Science and Technology, Jashore, 7408, Bangladesh; School of Biology and Environmental Science, Queensland University of Technology, Brisbane, 4000, Australia
| | - E M Tanvir
- School of Pharmacy, The University of Queensland, Brisbane, Queensland, 4102, Australia; Institute of Food & Radiation Biology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Savar, Dhaka, 1349, Bangladesh
| | - Sabbir Howlader
- Department of Applied Chemistry and Chemical Engineering, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Md Abu Bakar Siddique
- Institute of National Analytical Research and Service (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dhaka, 1205, Bangladesh
| | - Cheng Peng
- QAEHS, Queensland Alliance for Environmental Health Sciences, The University of Queensland, Brisbane, Queensland, 4102, Australia
| | - Jack C Ng
- QAEHS, Queensland Alliance for Environmental Health Sciences, The University of Queensland, Brisbane, Queensland, 4102, Australia.
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18
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Xu Q, Wu B, Chai X. In Situ Remediation Technology for Heavy Metal Contaminated Sediment: A Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph192416767. [PMID: 36554648 PMCID: PMC9778991 DOI: 10.3390/ijerph192416767] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 05/19/2023]
Abstract
Sediment is an important part of the aquatic ecosystem, which involves material storage and energy exchange. However, heavy metal pollution in sediment is on the increase, becoming an important concern for the world. In this paper, the state-of-art in situ remediation technology for contaminated sediment was elaborated, including water diversion, capping, electrokinetic remediation, chemical amendments, bioremediation and combined remediation. The mechanisms for these techniques to reduce/immobilize heavy metals include physical, electrical, chemical and biological processes. Furthermore, application principle, efficiency and scope, advantages and disadvantages, as well as the latest research progress for each restoration technology, are systematically reviewed. This information will benefit in selecting appropriate and effective remediation techniques for heavy metal-contaminated sediment in specific scenarios.
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19
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Hossain MB, Rahman MA, Hossain MK, Nur AAU, Sultana S, Semme S, Albeshr MF, Arai T, Yu J. Contamination status and associated ecological risk assessment of heavy metals in different wetland sediments from an urbanized estuarine ecosystem. MARINE POLLUTION BULLETIN 2022; 185:114246. [PMID: 36279725 DOI: 10.1016/j.marpolbul.2022.114246] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/08/2022] [Accepted: 10/08/2022] [Indexed: 06/16/2023]
Abstract
Sediment samples of different wetland types (saltmarsh, mangrove, tidal pool, mudflat and sandflat) from an urbanized estuary were analyzed to evaluate the contamination level and ecological risks of five heavy metals (Pb, Fe, Zn, Ni and Cr). The findings showed that the mean concentration (mg/kg) of heavy metals followed the order of Fe > Zn > Ni > Pb > Cr, while Pb and Fe concentrations exceeded the recommended guidelines. Heavy metals levels were highest in saltmarsh and mudflats. Contamination assessment indices e.g., contamination factor (CF), degree of contamination (CD), enrichment factor (EF), and geo-accumulation index (Igeo) revealed that the studied wetlands had low to moderate levels of pollution, meaning these sites receive medium levels of anthropogenic contamination compared with background values. For some of the studied metals, such as Pb, Zn, Fe, and Ni, the EF value was >1 in certain types of wetland, indicating anthropogenic sources, while Cr was <1 indicating natural sources. The pollution load index (PLI) value was determined to be <1, indicating perfection of soil, and was in the following order: mudflat> saltmarsh> tidal pool> mangrove > sandflat. The ecological risk (RI) value was the highest for saltmarsh and the lowest for sandflats. However, the RI value for Cr, Zn, Ni, and Pb was <30 suggesting that these metals pose a low risk in the local ecosystem. Cluster analysis (CA), principal component analysis (PCA), and Pearson's correlation specified that anthropogenic sources of metals.
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Affiliation(s)
- M Belal Hossain
- School of Engineering and Built Environment, Griffith University, Brisbane, QLD 4111, Australia; Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh.
| | - M Asrafur Rahman
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | - Md Kamal Hossain
- Soil and Environment Research Section, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh.
| | - As-Ad Ujjaman Nur
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | - Salma Sultana
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | - Sanjida Semme
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | - Mohammed Fahad Albeshr
- Department of Zoology, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia.
| | - Takaomi Arai
- Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE 1410, Brunei Darussalam.
| | - Jimmy Yu
- School of Engineering and Built Environment, Griffith University, Brisbane, QLD 4111, Australia.
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20
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Putman AL, Jones DK, Blakowski MA, DiViesti D, Hynek SA, Fernandez DP, Mendoza D. Industrial Particulate Pollution and Historical Land Use Contribute Metals of Concern to Dust Deposited in Neighborhoods Along the Wasatch Front, UT, USA. GEOHEALTH 2022; 6:e2022GH000671. [PMID: 36340997 PMCID: PMC9627553 DOI: 10.1029/2022gh000671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 09/14/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
The Salt Lake Valley, UT, USA, is proximal to the desiccating Great Salt Lake (GSL). Prior work has found that this lakebed/playa contributes metals-laden dust to snow in the Wasatch and Uinta Mountains. Dust and industrial particulate pollution are also delivered to communities along the Wasatch Front, but their sources, compositions, and fluxes are poorly characterized. In this study, we analyzed the dust deposited in 18 passive samplers positioned near the GSL, in cities in and near the Salt Lake Valley for total dust flux, the <63 µm dust fraction, 87Sr/86Sr, and trace element geochemistry. We compared spatial patterns in metal flux and abundance with community-level socioeconomic metrics. We observed the highest dust fluxes at sites near the GSL playa. Within the urban corridor, 87Sr/86Sr and trace element relative abundances suggest that most of the dust to which people are regularly exposed may be fugitive dust from local soil materials. The trace metal content of dust deposited along the Wasatch Front exceeded Environmental Protection Agency screening levels and exhibited enrichment relative to both the upper continental crust and the dust collected adjacent to GSL. Sources of metals to dust deposited along the Wasatch Front may include industrial activities like mining, oil refining, as well as past historical pesticide and herbicide applications. Arsenic and vanadium indicated a statistically significant positive correlation with income, whereas lead, thallium, and nickel exhibited higher concentrations in the least wealthy and least white neighborhoods.
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Affiliation(s)
- Annie L. Putman
- Utah Water Science CenterU.S. Geological SurveyWest Valley CityUTUSA
| | - Daniel K. Jones
- Utah Water Science CenterU.S. Geological SurveyWest Valley CityUTUSA
| | - Molly A. Blakowski
- Utah Water Science CenterU.S. Geological SurveyWest Valley CityUTUSA
- Department of Watershed SciencesUtah State UniversityLoganUTUSA
| | - Destry DiViesti
- Utah Water Science CenterU.S. Geological SurveyWest Valley CityUTUSA
| | - Scott A. Hynek
- Utah Water Science CenterU.S. Geological SurveyWest Valley CityUTUSA
| | - Diego P. Fernandez
- Department of Geology and GeophysicsUniversity of UtahSalt Lake CityUTUSA
| | - Daniel Mendoza
- Department of Atmospheric SciencesUniversity of UtahSalt Lake CityUTUSA
- Department of City & Metropolitan PlanningUniversity of UtahSalt Lake CityUTUSA
- Division of Pulmonary MedicineUniversity of UtahSalt Lake CityUTUSA
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21
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Guimarães RHE, Wallner-Kersanach M, Correa JAM. Assessment of anthropogenic metals in shipyard sediment in the Amazon delta estuary in northern Brazil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:77007-77025. [PMID: 35675010 DOI: 10.1007/s11356-022-20960-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 05/16/2022] [Indexed: 06/15/2023]
Abstract
Shipyard activities have contributed to the release of anthropogenic metals in sediment in the Amazon delta estuary, but no studies of the issue have been carried out in northern Brazil. This study evaluated the sediment that is under the influence of shipyard activities in the Guajará Bay and in the channel of the Maguari River, in Belém, Pará (PA) state, northern Brazil. Sediment samples were collected in the vicinity of the shipyards, while samples of paint and metal fragments were collected from hulls of abandoned vessels. Metals under analysis were Cu, Zn, Pb, Ni, Cr, Ba, V, Li, Fe and Al. Mean Cu concentrations found in the sediment in two shipyards - 28.3 mg kg-1 and 41.0 mg kg-1 - were above the threshold effect level (TEL) for the amphipod Hyalella azteca. The highest concentrations of metals found in paint fragments from abandoned vessels were 29,588 mg kg-1 Ba, 9,350 mg kg-1 Zn, 1,097 mg kg-1 Pb and 548 mg kg-1 Cr. This fact suggests that vessel abandonment is a major source of contamination in shipyard areas. The principal component analysis (PCA) showed that most metals under study are closely related to sediment contamination in the shipyards. Geoaccumulation index and screening concentrations of inorganic contaminants for metals in freshwater ecosystems confirmed that a shipyard was contaminated by copper. Results may support further studies of contamination and application of waste management to shipyards and vessel graveyards around the world.
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Affiliation(s)
| | - Mônica Wallner-Kersanach
- Laboratório de Hidroquímica, Instituto de Oceanografia, Universidade Federal de Rio Grande, Rio Grande, RS, 96203-000, Brazil.
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22
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Uddin MK, Nobi MN, Islam ANMM. Environmental hazards and health rights of workers in shipbreaking in Bangladesh. INTERNATIONAL JOURNAL OF HUMAN RIGHTS IN HEALTHCARE 2022. [DOI: 10.1108/ijhrh-03-2022-0014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Purpose
The shipbreaking sector in Bangladesh has spurred extensive academic and policy debates on relations between shipbreaking industries, environmental degradation and the health security of their workers. As shipbreaking is an economically significant industry in Bangladesh, it needs to implement both domestic and global mechanisms for environmental conservation and the protection of the labourers’ health from environmental risks. The purpose of this paper is to primarily explore the environmental and health security issues in shipbreaking activities in Bangladesh. It also identifies the challenges in implementing the rules and regulations for protecting the health of the workers at shipbreaking yards in Bangladesh and preserving the marine environment.
Design/methodology/approach
This is a qualitative paper based on secondary materials, including journal articles, books and national and international reports. It critically reviews the existing literature, rules, regulations and policing on shipbreaking with a particular focus on the environment and health security of the workers.
Findings
This paper finds that the implementation of the rules and regulations in shipbreaking in Bangladesh is complicated because of weak implementation mechanisms, political and economic interests of the yard owners, lack of coordination among different agencies, lack of adequate training and awareness among the workers and workers’ poor economic condition, which contribute to the degradation of marine and local environments and trigger health hazards among the workers. Therefore, degrading the environment and undermining occupational health and safety regulations have become regular; thus, accidental death and injury to the workers are common in this sector.
Originality/value
This paper is an important study on the issues of workers' health and safety and environmental hazards in the shipyard. It reports how the health security of the workers in shipbreaking yards in Bangladesh is vulnerable, and environmental rules are challenged. Finally, this paper frames some policy implications to safeguard the workers’ health rights and the marine environment.
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Rahman MS, Akther S, Ahmed ASS, Saha N, Rahman LS, Ahmed MK, Arai T, Idris AM. Distribution and source apportionment of toxic and trace elements in some benthic and pelagic coastal fish species in Karnaphuli River Estuary, Bangladesh: Risk to human health. MARINE POLLUTION BULLETIN 2022; 183:114044. [PMID: 36007270 DOI: 10.1016/j.marpolbul.2022.114044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 08/08/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
The Karnaphuli River is one of the prime and most important streams in the southeastern part of Bangladesh. The favorable water current and the geographic location have rendered the Karnaphuly River estuary a suitable habitat and a breeding ground for diverse fish species. Reversely, this estuary has been polluted by discharges from many point and non-point sources due to its location in the catchment area of a heavily industrialized area, Chattagram port city. However, published research concerning the status of toxic and trace elements in some commercially important benthic and pelagic coastal fish species in Karnaphuli River estuary was not found in the existing literature. Therefore, it's an important field of study on the assessment of toxic and trace elements concentration in the commercially important benthic and pelagic coastal fish species and their health taxation in the Karnaphuli River Estuary. Energy dispersive X-ray fluorescence (ED-XRF) was used to quantify trace metal concentration in edible parts of the fish species. This study revealed that the rank of the trace metals concentration was as follows (mg/kg): Zn (37.1) > Mn (16.12) > V (11.16) > Cu (9.49) > Rb (5.62) > Pb (2.98) > Cr (1.59) > Co (1.17). The F-test showed that a significant difference at 95 % confidence level in the distribution pattern of trace metals concentration among the examined fish species in the study area. The metal pollution index (MPI) in the muscle of fishes were found to be in the following order: L. bata > P. monodon > T. cirratus > M. bleekeri > O. pabda > H. nehereus > L. calcarifer > P. argenteus > P. paradiseus > T. toli, and the MPIs for most of the benthic fish species were higher compared to the pelagic fishes. On the other hand, the examined fish species were significantly bio-accumulative with the highest bio-accumulation factor value for benthic species. The multivariate analysis identified that the sources of the trace metals were associated with anthropogenic activities. For the human health risk assessment concern, estimated daily intake, target hazard quotient and cancer-causing risk were estimated. The results for non-cancer hazardous index values were found to be lower than unity. On the other hand, the total cancer risk data ranging from 1.24E-05 to 1.70E-05 were fallen within the range for the threshold values (1.0E-06 to 1.0E-04). However, considering the suggested values set by the environmental and regulatory agencies, it has been recommended that no significant non-carcinogenic and cancer-causing health risk for humans was seen due to the consumption of the studied fish species.
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Affiliation(s)
- M Safiur Rahman
- Water Quality Research Laboratory, Chemistry Division, Atomic Energy Center, Bangladesh Atomic Energy Commission, 4-Kazi Nazrul Islam Avenue, Shahbag, Dhaka 1000, Bangladesh; Air Particulate Research Laboratory, Chemistry Division, Bangladesh Atomic Energy Commission, Shahbag, Dhaka 1000, Bangladesh.
| | - Sharmin Akther
- Department of Oceanography, Faculty of Earth and Environmental Science, University of Dhaka, Dhaka 1000, Bangladesh
| | | | - Narottam Saha
- Sustainable Minerals Institute, Center for Mined Land Rehabilitation, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Lamisa S Rahman
- Faculty of Science, Dalhousie University, 1355 Oxford Street, Halifax, NS B3H 4R2, Canada
| | - Md Kawser Ahmed
- Department of Oceanography, Faculty of Earth and Environmental Science, University of Dhaka, Dhaka 1000, Bangladesh
| | - Takaomi Arai
- Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Abubakr M Idris
- Department of Chemistry, College of Science, King Khalid University, Abha 62529, Saudi Arabia; Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 62529, Saudi Arabia
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24
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Dan SF, Udoh EC, Wang Q. Contamination and ecological risk assessment of heavy metals, and relationship with organic matter sources in surface sediments of the Cross River Estuary and nearshore areas. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129531. [PMID: 35820332 DOI: 10.1016/j.jhazmat.2022.129531] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/21/2022] [Accepted: 07/02/2022] [Indexed: 06/15/2023]
Abstract
Chemical speciation of heavy metals (Zn, Pb, Cu, and Cd) was studied to evaluate the contamination status and associated risks and to constrain the sources of heavy metals in relation to sedimentary organic matter (OM) sources in surface sediments of the Cross River Estuary (CRE) and nearshore areas surrounded by a degrading mangrove ecosystem (typical C3 plants). The contamination factor (CF) and geo-accumulation (Igeo) indicated that Cd and Zn were the most polluted heavy metals. High percentages of Zn (63.78%), Pb (64.48%), Cd (76.72%) and the considerable amount of Cu (48.57%) in non-residual fractions indicated that these heavy metals are bioavailable. Cd showed moderate to high ecological and bioavailability risk based on the ecological risk (Er) and risk assessment code (RAC). Significant positive correlations occurred among the heavy metals, fine-grained sediments, and sedimentary OM from terrestrial C3 sources. These correlations, together with high percentages of heavy metals in the oxidizable fraction (~33-50%), indicated that the erosive washout of OM and fine sediments ladened with heavy metals from the adjoining degraded mangrove ecosystem contributed significantly to the increased contents of heavy metals in surface sediments of the study area.
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Affiliation(s)
- Solomon Felix Dan
- Guangxi Key Laboratory of Marine Disaster in the Beibu Gulf, Beibu Gulf University, Qinzhou 535011, China.
| | - Enobong Charles Udoh
- State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China
| | - Qianqian Wang
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
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25
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Hossain Bhuiyan MA, Chandra Karmaker S, Saha BB. Nexus between potentially toxic elements' accumulation and seasonal/anthropogenic influences on mangrove sediments and ecological risk in Sundarbans, Bangladesh: An approach from GIS, self-organizing map, conditional inference tree and random forest models. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 309:119765. [PMID: 35870534 DOI: 10.1016/j.envpol.2022.119765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 07/06/2022] [Accepted: 07/09/2022] [Indexed: 06/15/2023]
Abstract
Mangroves play a vital role in protecting the coastal community from the climate change effect and in the restoration of the coastal ecosystem. This research has been designed to determine the spatial and seasonal changes of potentially toxic elements' (PTEs) concentration in sediments and their potential source contribution among the different human-driven processes in Sundarbans, Bangladesh. Different pollution evaluation indices, random forest (RF) model, conditional inference tree (CIT), self-organizing map (SOM), geographical information system (GIS), and principal component analysis (PCA) were used for the interpretation of sources and risk assessment of PTEs. The mean concentration of PTEs both in winter and monsoon seasons has fallen below the threshold effect level but exceeded the rare effect level of marine sediments quality standards. Results showed that the PTEs were significantly enriched (EF > 1.00 < 70.00) in sediments, whereas the Cd enrichment (7.00% samples) was very alarming (EF = 60-70). Except for Zn and Cd, other PTEs were enriched in 30-60% samples. The highest geoaccumulation and contamination factors for Cd were observed in 46-72% of samples. The ecological risk (ER) factors showed similar results where Cd showed strong to very strong factors (ER = 110-2218) in 80% of samples. The CIT explained the natural/geogenic and anthropogenic sources of pollution, where the higher CIT values for Cd indicated industrial, aquaculture, and coal-based thermal powerplant. The RF model provided that shrimp firms, power plants, industry, and seaport were recognized as the influential sources for Zn, Pb, Cr, Cd, and As in sediments. Though Pb and As were found as the most significant pollutants, Cd was identified as a severe threat to ecology and public health. Based on CIT, RF, SOM and PCA the order of PTEs in mangroves sediment were:industrial/urban > aquaculture/shrimpfirm > powerplant > seaportoperation > tourism > geogenic/natural. The present study will help the policymakers for effective and sustainable management of the mangrove ecosystem.
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Affiliation(s)
- Mohammad Amir Hossain Bhuiyan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744, Motooka, Nishi-ku, Fukuoka-City, 819-0395, Japan; Department of Environmental Sciences, Jahangirnagar University, Dhaka, 1342, Bangladesh.
| | - Shamal Chandra Karmaker
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744, Motooka, Nishi-ku, Fukuoka-City, 819-0395, Japan; Mechanical Engineering Department, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka-shi, Fukuoka, 819-0395, Japan; Department of Statistics, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Bidyut Baran Saha
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744, Motooka, Nishi-ku, Fukuoka-City, 819-0395, Japan; Mechanical Engineering Department, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka-shi, Fukuoka, 819-0395, Japan
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26
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Hossain MB, Miazie MR, Nur AAU, Paul SK, Bakar MA, Paray BA, Arai T. Assessment of Metal Contamination in Water of Freshwater Aquaculture Farms from a South Asian Tropical Coastal Area. TOXICS 2022; 10:toxics10090536. [PMID: 36136501 PMCID: PMC9503657 DOI: 10.3390/toxics10090536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 05/14/2022] [Accepted: 05/21/2022] [Indexed: 05/27/2023]
Abstract
Heavy metal accumulation in aquaculture farms has become a major problem due to the widespread use of artificial feed to enhance fish productivity. To estimate the contamination level and identify metal sources, we investigated the amounts of seven heavy metals (Cu, Zn, Pb, Cd, Cr, Ni, and Mn) in the surface water of commercial fresh water aquaculture farms in a south Asian tropical coastal area. Atomic absorption spectrometry (AAS) was used to analyze 36 water samples from 12 commercial fish farms. The results demonstrated that the range of three heavy metals were detected in a decreasing order of Mn (0.0574−0.4100 mg.L−1) > Zn (0.0125−0.3250 mg.L−1) > Cu (0.0275−0.085 mg.L−1). In all samples, the remaining four heavy metals (Pb, Cd, Cr, and Ni) were below the detectable level (BDL). Except for Mn, the amounts of the metals examined were below WHO and USEPA guideline values. According to the findings, the levels were found to be safe for drinking, agriculture production, and aquaculture. There was no significant correlation (p > 0.05) between heavy metal concentrations and water quality parameters, indicating that pollution came from diverse sources and that no single factor was controlling their levels. Furthermore, Analysis of Variance (ANOVA) revealed no significant differences in the mean metal values among the fish farms (p > 0.05). Multivariate analyses (CA and PCA) demonstrated the association and sources of metal in the study area. Although metal levels were not beyond the threshold limit, it is recommended that suitable measures and continuous monitoring should be undertaken to reduce heavy metal pollution in aquaculture farms and prevent water quality degradation.
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Affiliation(s)
- Mohammad Belal Hossain
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
- School of Engineering and Built Environment, Griffith University, Brisbane, QLD 4111, Australia
| | - Md. Robel Miazie
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | - As-Ad Ujjaman Nur
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | - Shyamal Kumar Paul
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | - Muhammad Abu Bakar
- Bangladesh Council of Scientific and Industrial Lab (BCSIR), Chittagong 4220, Bangladesh
| | - Bilal Ahamad Paray
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Takaomi Arai
- Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei
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27
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Rakib MRJ, Rahman MA, Onyena AP, Kumar R, Sarker A, Hossain MB, Islam ARMT, Islam MS, Rahman MM, Jolly YN, Idris AM, Ali MM, Bilal M, Sun X. A comprehensive review of heavy metal pollution in the coastal areas of Bangladesh: abundance, bioaccumulation, health implications, and challenges. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:67532-67558. [PMID: 35921010 DOI: 10.1007/s11356-022-22122-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 07/16/2022] [Indexed: 06/15/2023]
Abstract
The coastal zone of Bangladesh, with a population density of 1278 people per square kilometer, is under serious threat due to heavy metal pollution. To date, many studies have been conducted on the heavy metal contamination in soils, water, aquatic animals, and plants in the coastal zone of Bangladesh; however, the available information is dispersed. In this study, previous findings on the contamination levels, distributions, risks, and sources of heavy metals in sediments and organisms were summarized for the first time to present the overall status of heavy metal pollution along coastal regions. Earlier research found that the concentrations of various heavy metals (HMs), particularly Co, Cd, Pb, Cu, Cr, Mn, Fe, and Ni in water, sediment, and fish in most coastal locations, were above their permissible limits. High concentrations of HMs were observed in sediments and water, like Cr of 55 mg/kg and 86.93 mg/l in the ship-breaking areas and Karnaphuli River, respectively, in coastal regions of Bangladesh. Heavy metals severely contaminated the Karnaphuli River estuary and ship-breaking area on the Sitakundu coast, where sediments were the ultimate sink of high concentrations of metals. Sedentary or bottom-dwelling organisms like gastropods and shrimp had higher levels of heavy metals than other organisms. As a result, the modified PRISMA review method was used to look at the critical research gap about heavy metal pollution in Bangladesh's coastal areas by analyzing the current research trends and bottlenecks.
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Affiliation(s)
- Md Refat Jahan Rakib
- Department of Fisheries and Marine Science, Faculty of Science, Noakhali Science and Technology University, Noakhali, Bangladesh.
| | - Md Asrafur Rahman
- Department of Fisheries and Marine Science, Faculty of Science, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Amarachi Paschaline Onyena
- Department of Marine Environment and Pollution Control, Nigeria Maritime University Okerenkoko, Warri, Delta State, Nigeria
| | - Rakesh Kumar
- School of Ecology and Environment Studies, Nalanda University, Rajgir, 803116, Bihar, India
| | - Aniruddha Sarker
- School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - M Belal Hossain
- Department of Fisheries and Marine Science, Faculty of Science, Noakhali Science and Technology University, Noakhali, Bangladesh
- School of Engineering and Built Environment, Griffith University, Brisbane, QLD, Australia
| | | | - Md Saiful Islam
- Department of Soil Science, Patuakhali Science and Technology University, Dumki, Patuakhali, Bangladesh
| | - Md Mostafizur Rahman
- Laboratory of Environmental Health and Ecotoxicology, Department of Environmental Sciences, Jahangirnagar University, Dhaka, 1342, Bangladesh
| | - Yeasmin Nahar Jolly
- Atmospheric and Environmental Chemistry Laboratory, Chemistry Division Atomic Energy Centre, Dhaka, 1000, Bangladesh
| | - Abubakr M Idris
- Department of Chemistry, College of Science, King Khalid University, Abha, 62529, Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha, 62529, Saudi Arabia
| | - Mir Mohammad Ali
- Department of Aquaculture, Bangla Agricultural University, Sher-e, Dhaka-1207, Bangladesh
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
| | - Xian Sun
- Zhuhai Key Laboratory of Marine Bioresources and Environment, Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-Sen University, Guangzhou, 510275, China
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28
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Hossain MS, Liyana E, Sifat SAD, Ameen F, Ullah MA, Jolly YN, Quraishi SB, Hossain M, Salleh S, Akter S, Hossain MA, Bin Mukhlish MZ, Elliott M. Trace element bioaccumulation in edible red seaweeds (Rhodophyta): A risk assessment for consumers. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 307:119560. [PMID: 35654256 DOI: 10.1016/j.envpol.2022.119560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/13/2022] [Accepted: 05/29/2022] [Indexed: 06/15/2023]
Abstract
As a precursor to risk assessment and risk management through consuming contaminated seafood, food safety needs to be quantified and assured. Seaweed is an increasing dietary component, especially in developing countries, but there are few studies assessing uptake rates of contaminants from this route. As such, the present study determined likely human uptake due to the trace elemental (Fe, Mn, Ni, Cu, Zn, Se, Hg, and As) concentrations in the edible red seaweeds (Rhodophyta) Gelidium pusillum and Hypnea musciformis, growing in the industrialised Cox's Bazar coastal area of Bangladesh. Metal and metalloid concentrations in G. pusillum were in the order (mg/kg): Fe (797 ± 67) > Mn (69 ± 4) > Ni (12 ± 5) > Zn (9 ± 4) > Cu (9 ± 4) >Se (0.1 ± 0.1) > Hg (0.1 ± 0.01), and in H. musciformis: Fe (668 ± 58) > Mn (28 ± 5) > Ni (14 ± 2) > Zn (11 ± 5) > Cu (6 ± 4) >Se (0.2 ± 0.03) > Hg (0.04 ± 0.01). Despite the industrial activities in the area, and based on 10 g. day-1 seaweed consumption, it is concluded that these concentrations pose no risk to human health as part of a normal diet according to the targeted hazard quotient and hazard index (THQ and HI) (values < 1). In addition, and as a novel aspect for seaweeds, Selenium Health Benefit Values (Se-HBV) were determined and found to have positive values. Seaweed can be used as an absorber of inorganic metals for removing contamination in coastal waters. The results are a precursor to further research regarding the efficiency and rate at which seaweeds can sequester metal contamination in water. In addition, management techniques need to be developed thereby to control the contaminant inputs.
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Affiliation(s)
- Md Solaiman Hossain
- Dept. of Oceanography, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh.
| | - Eurida Liyana
- Dept. of Oceanography, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
| | - Saad Al-Din Sifat
- Dept. of Food Engineering and Tea Technology, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
| | - Fuad Ameen
- Dept. of Botany & Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Md Akram Ullah
- Dept. of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - Yeasmin Nahar Jolly
- Atmospheric and Environmental Chemistry Laboratory, Chemistry Division, Atomic Energy Center, Dhaka, 1000, Bangladesh
| | - Shamshad Begum Quraishi
- Atmospheric and Environmental Chemistry Laboratory, Chemistry Division, Atomic Energy Center, Dhaka, 1000, Bangladesh
| | - Mofazzal Hossain
- Dhaka Central International Medical College and Hospital, Dhaka, 1207, Bangladesh
| | - Sazlina Salleh
- Centre for Policy Research and International Studies, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia; Centre for Marine and Coastal Studies, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Sharmin Akter
- Dept. of Petroleum and Mining Engineering, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
| | - Mohammad Afzal Hossain
- Dept. of Food Engineering and Tea Technology, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
| | - Muhammad Zobayer Bin Mukhlish
- Dept. of Chemical Engineering and Polymer Science, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
| | - Michael Elliott
- Dept. of Biological & Marine Sciences, University of Hull, Hull, HU6 7RX, United Kingdom; International Estuarine & Coastal Specialists Ltd., Leven, HU17 5LQ, United Kingdom
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29
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Rahman MS, Parvez S, Begum BA, Quraishi SB, Choudhury TR, Fatema KJ, Hosen MM, Bodrud-Doza M, Rahman LS, Sattar MA. Chemometric appraisal of water quality for domestic and agricultural purposes: a case study from establishing Rooppur Nuclear Power Plant (NPP) area, Pabna District, Bangladesh. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:56620-56641. [PMID: 35347605 DOI: 10.1007/s11356-022-19308-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 02/15/2022] [Indexed: 06/14/2023]
Abstract
Water is the main sources for domestic purposes and as well as for both farming and industrial activities. Therefore, this study investigated the quality of groundwater at Ishwardi, Pabna district of Bangladesh. This study showed that the heavy metals such as Pb, Cd, Cr, As, Ni, Cu, Zn, and Fe were remaining in trace amount. The groundwater quality index (GWQI), heavy metal evaluation index (HEI), heavy metal pollution index (HPI), and degree of contamination (Cd) revealed that all of the groundwater samples belonged to good quality condition for drinking purposes. Nevertheless, Cd provided better index than other indices. Subsequently, hazard quotient (HQ) and hazard index (HI) values for heavy metals indicated that there was no significant noncarcinogenic health risk due to oral ingestion of groundwater except three sites. However, the paired student t-test ([Formula: see text]) revealed that child was found to be more exposed compared to adult for noncarcinogenic health risk due to oral ingestion of the same groundwater samples. This study revealed that pH, EC, TDS, salinity, Na+, K+, Mg2+, Ca2+, Cl-, SO42-, PO43-, and NO3- values in water samples are in tolerable limit according to Bangladesh (DoE) and international standards (WHO, IS, FAO, USEPA, UCCC). Subsequently, combined approaches of numerous irrigation water quality indices, sodium adsorption ratio (SAR), soluble sodium percentage (SSP), total hardness (TH), residual sodium carbonate (RSC), and Kelley's ratio (KR), were applied to appraise the appropriateness of water for farming purposes. The irrigation water quality index (IWQI) revealed that majority of the groundwater samples were suitable for agricultural purposes. Classification based on Wilcox and US salinity hazard diagram indicated a consistent conclusion, which indicated that the water quality was in good condition for farming in the study area.
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Affiliation(s)
- M Safiur Rahman
- Water Quality Research Laboratory, Chemistry Division, Atomic Energy Centre, Bangladesh Atomic Energy Commission, 4-Kazi Nazrul Islam Avenue, Dhaka, 1000, Bangladesh.
- Air Particulate Research Laboratory, Chemistry Division, Atomic Energy Centre, 4-Kazi Nazrul Islam Avenue, Dhaka, 1000, Bangladesh.
| | - Shaown Parvez
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Islamic University, Kushtia, Bangladesh
| | - Bilkis A Begum
- Analytical Chemistry Laboratory, Chemistry Division, Atomic Energy Centre, 4-Kazi Nazrul Islam Avenue, Shahbag, Dhaka, 1000, Bangladesh
| | - Shamshad B Quraishi
- Analytical Chemistry Laboratory, Chemistry Division, Atomic Energy Centre, 4-Kazi Nazrul Islam Avenue, Shahbag, Dhaka, 1000, Bangladesh
| | - Tasrina R Choudhury
- Analytical Chemistry Laboratory, Chemistry Division, Atomic Energy Centre, 4-Kazi Nazrul Islam Avenue, Shahbag, Dhaka, 1000, Bangladesh
| | - Konica J Fatema
- Water Quality Research Laboratory, Chemistry Division, Atomic Energy Centre, Bangladesh Atomic Energy Commission, 4-Kazi Nazrul Islam Avenue, Dhaka, 1000, Bangladesh
| | - Mohammad M Hosen
- Analytical Chemistry Laboratory, Chemistry Division, Atomic Energy Centre, 4-Kazi Nazrul Islam Avenue, Shahbag, Dhaka, 1000, Bangladesh
| | - Md Bodrud-Doza
- Climate Change Programme, BRAC Centre, 75 Mohakhali, Dhaka, 1212, Bangladesh
| | - Lamisa S Rahman
- Faculty of Science, Dalhousie University, 1355 Oxford Street, P.O. Box 15000, Halifax, NS, B3H 4R2, Canada
| | - Md Abdus Sattar
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Islamic University, Kushtia, Bangladesh
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Hossain MB, Masum Z, Rahman MS, Yu J, Noman MA, Jolly YN, Begum BA, Paray BA, Arai T. Heavy Metal Accumulation and Phytoremediation Potentiality of Some Selected Mangrove Species from the World's Largest Mangrove Forest. BIOLOGY 2022; 11:biology11081144. [PMID: 36009771 PMCID: PMC9405028 DOI: 10.3390/biology11081144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/08/2022] [Accepted: 05/10/2022] [Indexed: 11/16/2022]
Abstract
Toxic metal pollution is a global issue, and the use of metal-accumulating plants to clean contaminated ecosystems is one of the most rapidly growing ecologically beneficial and cost-effective technologies. In this study, samples of sediment and three mangrove species (Excoecaria agallocha, Avicennia officinalis, Sonneratia apetala) were collected from the world’s largest mangrove forest (along the Northern Bay of Bengal Coast) with the aim of evaluating metal concentrations, contamination degrees, and phytoremediation potentiality of those plants. Overall, the heavy metals concentration in sediment ranged from Cu: 72.41−95.89 mg/kg; Zn: 51.28−71.20 mg/kg; Fe: 22,760−27,470 mg/kg; Mn: 80.37−116.37 mg/kg; Sr: 167.92−221.44 mg/kg. In mangrove plants, the mean concentrations were in the order of E. agallocha > A. officinalis > S. apetala. The mean (± SD) concentration of each metal in the plant tissue (root) was found following the descending order of Fe (737.37 ± 153.06) > Mn (151.13 ± 34.26) > Sr (20.98 ± 6.97) > Cu (16.12 ± 4.34) > Zn (11.3 ± 2.39) mg/kg, whereas, in the leaf part, the mean concentration (mg/kg) of each metal found in the order of Fe (598.75 ± 410.65) > Mn (297.27 ± 148.11) > Sr (21.40 ± 8.71) > Cu (14.25 ± 2.51) > Zn (12.56 ± 2.13). The contamination factor (CF) values for the studied metals were in the descending order of Cu > Sr > Zn > Fe > Mn. The values of Igeo (Geo-accumulation index) and CF showed that the area was unpolluted to moderately polluted by Zn, Fe, Mn, Cu and Sr. Enrichment factor (EF) values in both sampling stations portrayed moderate to minimum enrichment. Phytoremediation potentiality of the species was assessed by bio-concentration factor (BCF) and translocation factor (TF). BCF values showed less accumulation for most of the heavy metals (<1) except Mn which was highly accumulated in all mangrove plants. The translocation factor (TF) values depicted that most of the heavy metals were strongly accumulated in plant tissues (>1). However, the BCF value depicts that Mn was highly bioconcentrated in E. agallocha, but the translocation on leaves tissue were minimum, which reveals that E. agallocha is phytoextractor for Mn, and accumulated in root tissues. All the examined plants can be used as phytoextractors as they have bioconcentration factors <1 and translocation factors >1. However, A. officinalis is clearly more suitable for metal extraction than S. apetala and E. agallocha in terms of hyper-metabolizing capabilities.
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Affiliation(s)
- M. Belal Hossain
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh;
- School of Engineering and Built Environment, Griffith University, Brisbane, QLD 4111, Australia;
- Correspondence:
| | - Zobaer Masum
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh;
| | - M. Safiur Rahman
- Chemistry Division, Atomic Energy Centre Dhaka (AECD), Bangladesh Atomic Energy Commission, Dhaka 1000, Bangladesh; (M.S.R.); (Y.N.J.); (B.A.B.)
| | - Jimmy Yu
- School of Engineering and Built Environment, Griffith University, Brisbane, QLD 4111, Australia;
| | - Md. Abu Noman
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China;
| | - Yeasmin N. Jolly
- Chemistry Division, Atomic Energy Centre Dhaka (AECD), Bangladesh Atomic Energy Commission, Dhaka 1000, Bangladesh; (M.S.R.); (Y.N.J.); (B.A.B.)
| | - Bilkis A. Begum
- Chemistry Division, Atomic Energy Centre Dhaka (AECD), Bangladesh Atomic Energy Commission, Dhaka 1000, Bangladesh; (M.S.R.); (Y.N.J.); (B.A.B.)
| | - Bilal Ahamad Paray
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;
| | - Takaomi Arai
- Environmental and Life Sciences Programme, Faculty of Science, University Brunei Darussalam, Jala Tungku Link, Gadong BE1410, Brunei;
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Rahman M, Saima J, Rima SA, Hossain MIS, Das DK, Bakar MA, Siddique MAM. Ecological risks of heavy metals on surficial sediment of Nijhum Dweep (Island), an important biodiversity area of Bangladesh. MARINE POLLUTION BULLETIN 2022; 179:113688. [PMID: 35490486 DOI: 10.1016/j.marpolbul.2022.113688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 03/09/2022] [Accepted: 04/21/2022] [Indexed: 06/14/2023]
Abstract
Ten surficial sediment samples (up to a depth of 3 cm) were randomly collected during the pre-monsoon and analyzed for nine heavy metals using an atomic absorption spectrophotometer (AAS) to assess the distribution, contamination levels, and potential sources of heavy metals. The particle size distribution of the sediments was also investigated using a laser particle size analyzer. The mean concentration (mg/kg) of the analyzed metals followed a decreasing order of Fe (4706.24) > Mn (95.20) > Cu (36.97) > Zn (20.65) > Ni (9.26) > Cr (7.20) > Pb (5.63) > Co (5.52) > Cd (0.29). Surficial sediment of the Island was low to moderately contaminated by Cd and, to a laser extent by Cu in terms of enrichment factor (EF), geo-accumulation index (Igeo), and contamination factor. Ecologically, the Nijhum Dweep area was at low to moderate risk, where Cd was the most potential ecological risk factor. The Pearson correlation analysis revealed a significant positive correlation among Cr, Pb, Zn, Mn, Cd, Fe, Co, Ni, and silt particles, whereas a negative correlation with sand particles. No correlation was found with Cu and other metals except clay particles.
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Affiliation(s)
- Mahfuzur Rahman
- Department of Oceanography, Noakhali Science and Technology University, Noakhali 3814, Bangladesh.
| | - Jerin Saima
- Department of Oceanography, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | - Sabrina Akhter Rima
- Department of Oceanography, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | - Md Imam Sohel Hossain
- Institute of Mining, Mineralogy and Metallurgy, Bangladesh Council of Scientific and Industrial Research, Jaypurhat, Bangladesh
| | - Delip K Das
- Department of Zoology, Jagannath University, Dhaka 1100, Bangladesh
| | - Muhammad Abu Bakar
- Bangladesh Council of Scientific and Industrial Research, Chattogram, Bangladesh
| | - Mohammad Abdul Momin Siddique
- Department of Oceanography, Noakhali Science and Technology University, Noakhali 3814, Bangladesh; University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zatisi 728/II, 389 25 Vodnany, Czech Republic
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Sultana S, Hossain MB, Choudhury TR, Yu J, Rana MS, Noman MA, Hosen MM, Paray BA, Arai T. Ecological and Human Health Risk Assessment of Heavy Metals in Cultured Shrimp and Aquaculture Sludge. TOXICS 2022; 10:toxics10040175. [PMID: 35448436 PMCID: PMC9025133 DOI: 10.3390/toxics10040175] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 03/28/2022] [Accepted: 03/28/2022] [Indexed: 12/10/2022]
Abstract
Shrimp is one of the major export products in South Asian countries and also an eminent source of nutrition for humans. Hence, any negative effect of this industry may affect not only the country’s economy but also human health. Therefore, in this study, we aimed to assess heavy metal contamination and associated human health risks in cultured shrimp (Penaeus monodon) and aquaculture sludge collected from three shrimp farms of the Cox’s Bazar district, Bangladesh. The results showed that among the eight metals studied, Pb (17.75 ± 1.5 mg/kg) and Cu (9.43 ± 2.8 mg/kg) levels in all shrimp samples were higher than the recommended limit, whereas the concentrations of Cd (0.09 ± 0.03 mg/kg), Mn (4.83 ± 2.2 mg/kg), As (0.04 ± 0.02 mg/kg), Hg (0.02 ± 0.006 mg/kg), Zn (18.89 ± 2.9 mg/kg) and Cr (0.69 ± 0.6 mg/kg) were within the permissible level. The concentrations of Mn (1043.37 ± 59.8 mg/kg), Cr (30.38 ± 2.1 mg/kg), Zn (74.72 ± 1.13 mg/kg) and Cu (31.14 ± 1.4 mg/kg) in the sludge of all farms were higher than the recommended limit, whereas the concentrations of Pb (20.23 ± 1.9 mg/kg), Cd (0.09 ± 0.2 mg/kg), As (0.44 ± 0.34 mg/kg) and Hg (0.08 ± 0.02 mg/kg) in all sludge samples were lower than the threshold limits. However, the estimated daily intake (EDI), targeted hazard quotient (THQ) and hazard index (HI) assessed for potential human health risk implications suggested that Pb and Cr may pose non-carcinogenic health effects, although carcinogenic risks (CR) values were acceptable for consumers. However, the pollution load index (PLI) of the studied area was below 1, which indicates low deterioration of the area. Geoaccumulation index (Igeo) and contamination factor (CF) analyses revealed that study area is unpolluted and sludge is enriched with metals in the following order: Mn > Zn > Cu > Cr > Cd > Hg > Pb > As.
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Affiliation(s)
- Salma Sultana
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh; (S.S.); (M.S.R.)
| | - Mohammad Belal Hossain
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh; (S.S.); (M.S.R.)
- School of Engineering and Built Environment, Griffith University, Brisbane, QLD 4111, Australia;
- Correspondence: (M.B.H.); (T.R.C.)
| | - Tasrina R. Choudhury
- Chemistry Division, Atomic Energy Centre Dhaka (AECD), Bangladesh Atomic Energy Commission, Dhaka 1000, Bangladesh;
- Correspondence: (M.B.H.); (T.R.C.)
| | - Jimmy Yu
- School of Engineering and Built Environment, Griffith University, Brisbane, QLD 4111, Australia;
| | - Md. Sohel Rana
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh; (S.S.); (M.S.R.)
| | - Mohammad Abu Noman
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430074, China;
| | - M. Mozammal Hosen
- Chemistry Division, Atomic Energy Centre Dhaka (AECD), Bangladesh Atomic Energy Commission, Dhaka 1000, Bangladesh;
| | - Bilal Ahamad Paray
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;
| | - Takaomi Arai
- Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam;
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Rahman MS, Saha N, Ahmed ASS, Babu SMOF, Islam ARMT, Begum BA, Jolly YN, Akhter S, Choudhury TR. Depth-related dynamics of physicochemical characteristics and heavy metal accumulation in mangrove sediment and plant: Acanthus ilicifolius as a potential phytoextractor. MARINE POLLUTION BULLETIN 2021; 173:113160. [PMID: 34808545 DOI: 10.1016/j.marpolbul.2021.113160] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 09/17/2021] [Accepted: 11/12/2021] [Indexed: 06/13/2023]
Abstract
The focus of this study was to determine the depth-wise variability of physicochemical properties (i.e., pH, TOC, TN, and EC), and heavy metals (i.e., Pb, Cu, Zn, As, and Cr) concentration, and the associated biological and ecological risks of the mangrove sediment. The accumulation of metal contents and the phytoremediation and phytoextraction were also investigated in a mangrove species, Acanthus ilicifolius. The mangrove sediment consists of a higher proportion of sand fraction (56.6-74.7%) followed by clay (10-28%) and silt (10.1-15. 7%) fractions. The concentrations (mg/kg) of Pb, Cu, Zn, As, and Cr were ranged from 22.05-34.3, 8.58-22.77, 85.07-114, 5.56-12.91, and 0.98-5.12 in all the sediment layers. The hierarchy of the mean metal concentration in sediment was Zn (102 mg/kg) > Pb (25.6 mg/kg) > Cu (14.8 mg/kg) > As (8.79 mg/kg) > Cr (2.74 mg/kg) respectively. The examined metal concentrations were below the respective average shale values (ASVs). The degree of environmental, ecological, and biological risks was minimal according to various pollution indices like geoaccumulation index (Igeo), contamination factor (CF), and pollution load index (PLI). According to sediment quality guidelines (SQGs), the adverse biological risk effect was not likely to occur. The result of the potential ecological risk index (PERI) demonstrated that the study area was in the low-risk condition as the corresponded RI value < 100. A combined influence of geogenic and anthropogenic factors was identified as the metal sources by multivariate analysis. The study found that the accumulation rate of the metal contents was higher in leaves than that of roots. The mean descending metal concentration values were Zn (107) > Pb (28. 7) > Cu (16.9) > As (11.2) > Cr (4.99) in leaves and Zn (104.32) > Pb (27.02) > Cu (15.29) > As (10.39) > Cr (3.80) in roots. The translocation and bioaccumulation factors of heavy metals suggested that the mangrove plant species, A. ilicifolius can be used for phytoremediation and phytoextraction since the bio-concentration factor and translocation factor > 1. The studied species exhibited the metal tolerance associated with two following strategies, metal exclusion, and metal accumulation. However, excess metal tolerance can impact the surrounding marine environment.
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Affiliation(s)
- M Safiur Rahman
- Chemistry Division, Atomic Energy Center, Bangladesh Atomic Energy Commission, 4-Kazi Nazrul Islam Avenue, Shahbag, Dhaka 1000, Bangladesh.
| | - Narottam Saha
- Sustainable Minerals Institute, Center for Mined Land Rehabilitation, The University of Queensland, St Lucia, QLD 4072, Australia.
| | | | | | | | - Bilkis A Begum
- Chemistry Division, Atomic Energy Center, Bangladesh Atomic Energy Commission, 4-Kazi Nazrul Islam Avenue, Shahbag, Dhaka 1000, Bangladesh.
| | - Yeasmin N Jolly
- Chemistry Division, Atomic Energy Center, Bangladesh Atomic Energy Commission, 4-Kazi Nazrul Islam Avenue, Shahbag, Dhaka 1000, Bangladesh
| | - Shrin Akhter
- Chemistry Division, Atomic Energy Center, Bangladesh Atomic Energy Commission, 4-Kazi Nazrul Islam Avenue, Shahbag, Dhaka 1000, Bangladesh
| | - Tasrina R Choudhury
- Chemistry Division, Atomic Energy Center, Bangladesh Atomic Energy Commission, 4-Kazi Nazrul Islam Avenue, Shahbag, Dhaka 1000, Bangladesh
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Phytoremediation of Toxic Metals: A Sustainable Green Solution for Clean Environment. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app112110348] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Contamination of aquatic ecosystems by various sources has become a major worry all over the world. Pollutants can enter the human body through the food chain from aquatic and soil habitats. These pollutants can cause various chronic diseases in humans and mortality if they collect in the body over an extended period. Although the phytoremediation technique cannot completely remove harmful materials, it is an environmentally benign, cost-effective, and natural process that has no negative effects on the environment. The main types of phytoremediation, their mechanisms, and strategies to raise the remediation rate and the use of genetically altered plants, phytoremediation plant prospects, economics, and usable plants are reviewed in this review. Several factors influence the phytoremediation process, including types of contaminants, pollutant characteristics, and plant species selection, climate considerations, flooding and aging, the effect of salt, soil parameters, and redox potential. Phytoremediation’s environmental and economic efficiency, use, and relevance are depicted in our work. Multiple recent breakthroughs in phytoremediation technologies are also mentioned in this review.
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Hossain MB, Runu UH, Sarker MM, Hossain MK, Parvin A. Vertical distribution and contamination assessment of heavy metals in sediment cores of ship breaking area of Bangladesh. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:4235-4249. [PMID: 33830391 DOI: 10.1007/s10653-021-00919-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 03/30/2021] [Indexed: 06/12/2023]
Abstract
Vertical heavy metal profiling reflects the history of the deposition of metals and helps to understand the characteristics of accumulation in various layers of the sediment. Nevertheless, no previous studies in Bangladesh had focused on the vertical distribution of heavy metals in core sediments. In this study, vertical distribution, contamination level and potential ecological risks of six heavy metals (Zn, Cu, Pb, Cr, Ni, Mn) from the core sediment of ship breaking were assessed and compared with the non-ship breaking area of Bangladesh. The concentration (µg/g) of heavy metals in the 0-10 cm (surface), 10-20 cm (middle) and 20-30 cm (bottom) of sediment cores was as follows, respectively: Zn (35.54-100.68, 37.27-258.02, 42.78-66.45); Cu (16.38-75.25, 30.64-92.02, 34.99-52.98); Pb (4.84-132.08, BDL-204.48, BDL-23.51); Cr (14.57-42.13, 25.31-42.71, 15.26-36.34); Ni (4.02-42.23, 4.94-43.70, 4.40-43.13); Mn (198.74-764.16, 257.77-980.50, 255.62-856.44). The heavy metal content of core sediment from the shipbreaking region was substantially higher than that of non-shipbreaking area. Except for Ni, heavy metal content was highest in the middle layer, followed by the upper and lower layers of the sediment core. Contamination exponents such as enrichment factor, contamination factor and geo-accumulation index (Igeo) revealed contamination by Zn, Cu and Pb while potential ecological risk factor ([Formula: see text]) and risk index suggested low ecological risk by studied heavy metals except for Pb. Correlation matrix, cluster analysis and principal component analysis indicated that all studied heavy metals could have similar anthropogenic origins.
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Affiliation(s)
- Mohammad Belal Hossain
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh.
| | - Umme Hani Runu
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - Md Milon Sarker
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - Md Kamal Hossain
- Soil and Environment Laboratories, Bangladesh Council of Scientific and Industrial Research, Dhaka, 1205, Bangladesh
| | - Afroza Parvin
- Soil and Environment Laboratories, Bangladesh Council of Scientific and Industrial Research, Dhaka, 1205, Bangladesh
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Rahman MS, Jolly YN, Akter S, Kamal NA, Rahman R, Choudhury TR, Begum BA. Sources of toxic elements in indoor dust sample at export processing zone (EPZ) area: Dhaka, Bangladesh; and their impact on human health. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:39540-39557. [PMID: 33759091 DOI: 10.1007/s11356-021-13167-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 02/22/2021] [Indexed: 06/12/2023]
Abstract
In industrial areas, increased human activities generate high emissions of metals that contaminate the environment, and eventually affect human health. Therefore, this study aims to investigate the sources of toxic elements in indoor dust samples, and to evaluate possible health risks due to expose of human body through dermal contact, inhalation, and ingestion. A total 36 indoor dust samples were collected from the windows of twelve (12) industrial buildings, which are facing the main roads in the biggest export process zone (DEPZ) in Dhaka City, Bangladesh. The indoor dust samples were analyzed using X-ray fluorescence (XRF) technique for the determination of Cu, Zn, As, Pb, Fe, Cr, Co, Ni, K, Ca, Ti, Rb, and Sr. This investigation revealed that Cu, Zn, Pb, Fe, and Sr concentrations were slightly higher in various degree than that of the background value in soil recommended by the Chinese Environmental Protection Administration (CEPA). Subsequently, ANOVA (α = 0.05, p < 0.001) test and %RSD values (33% to 168%) showed that the concentrations of these metals were present non-homogeneously in different sampling points. However, statistical analysis and several geochemical indices have been proposed that these heavy metals might be come in indoor dust samples because of anthropogenic events. This investigation also showed that the most-extreme permissible hazard index (HIs) levels known as non-cancer risk for As, Mn, and Zn because of dust exposure in the study area were below than that of the safe limit (HI = 1) but with an exception of Pb (HI = 1.9E+00) for children. On the other hand, the degree of cancer-causing risk linked with exposure to arsenic in indoor dust (i.e., 0.502E-06 to 0.121E-05) falls within the range of threshold values (10-6 to 10-4). Therefore, following USEPA health risk models, it has been suggested that these metals present in indoor dust samples might not have significant impact on causing non-cancer and cancer risk to children and to adult at this moment in the DEPZ area, Bangladesh. However, a continuous monitoring should be needed to assess more accurately the non-cancer and cancer risk to children and adult.
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Affiliation(s)
- M Safiur Rahman
- Chemistry Division, Atomic Energy Centre Dhaka (AECD), Bangladesh Atomic Energy Commission, Shahbag, Dhaka, 1000, Bangladesh.
| | - Yeasmin Nahar Jolly
- Chemistry Division, Atomic Energy Centre Dhaka (AECD), Bangladesh Atomic Energy Commission, Shahbag, Dhaka, 1000, Bangladesh
| | - Shirin Akter
- Chemistry Division, Atomic Energy Centre Dhaka (AECD), Bangladesh Atomic Energy Commission, Shahbag, Dhaka, 1000, Bangladesh
| | - Noshin Anjum Kamal
- Departmanet of Physics, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Rubina Rahman
- Departmanet of Physics, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Tasrina Rabia Choudhury
- Chemistry Division, Atomic Energy Centre Dhaka (AECD), Bangladesh Atomic Energy Commission, Shahbag, Dhaka, 1000, Bangladesh
| | - Bilkis Ara Begum
- Chemistry Division, Atomic Energy Centre Dhaka (AECD), Bangladesh Atomic Energy Commission, Shahbag, Dhaka, 1000, Bangladesh
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Potentially Toxic Elements (PTEs) in Soils and Bulbs of Elephant Garlic (Allium ampeloprasum L.) Grown in Valdichiana, a Traditional Cultivation Area of Tuscany, Italy. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11157023] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of this study was to provide, for the first time, data on the concentration of potentially toxic elements (PTEs) in soils and bulbs of elephant garlic (Allium ampeloprasum L.) cultivated in Valdichiana, a traditional agricultural area of Tuscany, Italy. Bulbs of elephant garlic and soil samples were collected in four cultivation fields and analyzed by inductively coupled plasma-mass spectrometry (ICP-MS) to determine the concentrations of As, Cd, Co, Cr, Cu, Ni, Pb, Sb, Tl, U, V, Zn. The concentrations of these PTEs in bulbs and cultivation soils were used to calculate geochemical, ecological and health risk indices. The results of this study suggest that, although bulbs of elephant garlic from the Valdichiana area may present slightly high concentrations of Cd, Ni and Pb, the associated health risk based on the daily intake is absolutely negligible. Cultivation soils had somewhat high Cu concentrations probably due to the diffuse use of Cu-based products in agriculture, but showed overall a very low ecological risk.
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Maurya P, Kumari R. Toxic metals distribution, seasonal variations and environmental risk assessment in surficial sediment and mangrove plants (A. marina), Gulf of Kachchh (India). JOURNAL OF HAZARDOUS MATERIALS 2021; 413:125345. [PMID: 33930943 DOI: 10.1016/j.jhazmat.2021.125345] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 01/16/2021] [Accepted: 02/04/2021] [Indexed: 05/22/2023]
Abstract
Toxic metal pollution in the coastal ecosystem is becoming a serious problem, particularly in developing countries as a result of the industrial revolution. In recent years, mangroves are continuously contaminating with toxic metals and receiving global attention due to its toxicity, non-degradability, abundance, subsequent bioaccumulation, and biomagnification through successive trophic levels. This study aims to investigate the toxic metal content and pollution status in mangroves surface sediment and plants. Results showed that toxic metals in sediments were higher than natural background levels indicate anthropogenic sources. Fe, Mn, Sb, Ti found higher in concentration among all toxic metals, and site 9, 15, 18, 19, 21, 31 found the highest total metal load. Contamination indices like enrichment and contamination factor, geo-accumulation index, suggest minimal to extremely high level of contamination, and sediments have found extremely contaminated with Sb and As. Contamination degree and modified contamination degree suggest very high degree of contamination at all sites. Pollution load index indicates significant deterioration of sediment quality. Ecological risk and potential ecological risk index also indicate about 72% of sites come under higher ecological risk. Toxic metal in Avicennia marina was found higher in root than leaf. High bioconcentration factor has observed for Pb, Cu, Mo, Zn. Translocation factor for Cu and Zn at all sites, and As, Ni, Pb, Fe, Sr, Mn at some sites indicate high-efficiency in plants for toxic metal translocation.
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Affiliation(s)
- Parul Maurya
- Environment and Sustainable Development, Central University of Gujarat, Gandhinagar 382030, Gujarat, India.
| | - Rina Kumari
- Environment and Sustainable Development, Central University of Gujarat, Gandhinagar 382030, Gujarat, India.
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Chakraborty TK, Hossain MR, Ghosh GC, Ghosh P, Sadik A, Habib A, Zaman S, Enamul Kabir AHM, Khan AS, Rahman MM. Distribution, source identification and potential ecological risk of heavy metals in surface sediments of the Mongla port area, Bangladesh. TOXIN REV 2021. [DOI: 10.1080/15569543.2021.1942065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Tapos Kumar Chakraborty
- Department of Environmental Science and Technology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Md. Ripon Hossain
- Department of Environmental Science and Technology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Gopal Chandra Ghosh
- Department of Environmental Science and Technology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Prianka Ghosh
- Department of Environmental Science and Technology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Arifus Sadik
- Department of Environmental Science and Technology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Ahsan Habib
- Department of Environmental Science and Technology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Samina Zaman
- Department of Environmental Science and Technology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - A. H. M. Enamul Kabir
- Department of Environmental Science and Technology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Abu Shamim Khan
- Environmental Laboratory, Asia Arsenic Network, Arsenic Center, Jashore, Bangladesh
| | - Md. Mizanur Rahman
- Environmental Laboratory, Asia Arsenic Network, Arsenic Center, Jashore, Bangladesh
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40
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Health Risk and Water Quality Assessment of Surface Water in an Urban River of Bangladesh. SUSTAINABILITY 2021. [DOI: 10.3390/su13126832] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Despite significant contributions to the national economy of Bangladesh, various urban developments, massive industrial and growing shipping activities are making the water of many urban rivers, including Karnaphuli River, extremely polluted. To find out the pollution sources and their possible health effects, 45 water samples were collected from 15 sampling stations. Investigation of six physicochemical parameters (pH, temperature, total dissolved solids, conductivity, salinity, and turbidity) through in-situ measurements and eight heavy metals (Cd, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) status using atomic absorption spectrophotometer (AAS) was carried out in this research. Both the physicochemical parameters and heavy metals exceeded the World Health Organization (WHO)’s permeable threshold limit. The calculated hazard quotient (HQ) and hazard index (HI) ingestion values indicate non-carcinogenic risk both for adults and children, but dermal exposure was within the safety limit. Carcinogenic risk analysis revealed that Cd could cause a risk of cancer in those using the river water for a long period. Spatial analysis and metal pollution index (MPI) results exhibit that downstream of the river water is more polluted than upstream of the river. Overall, the findings of this study imply that polluted water is a threat to human health and the results will also help to undertake proper management strategies and incorporate monitoring programs that study river water for the implementation of safety measures to protect human health.
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41
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Uddin MJ, Jeong YK. Urban river pollution in Bangladesh during last 40 years: potential public health and ecological risk, present policy, and future prospects toward smart water management. Heliyon 2021; 7:e06107. [PMID: 33659727 PMCID: PMC7892934 DOI: 10.1016/j.heliyon.2021.e06107] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/14/2020] [Accepted: 01/22/2021] [Indexed: 12/14/2022] Open
Abstract
River water is very much important for domestic, agriculture and industrial use in Bangladesh which is in critical condition from long time based on research data. During last 40 years, extreme pollution events occurred in peripheral rivers surrounding Dhaka city and Karnaphuli River in Chittagong city. Present data showed that other urban rivers are also in critical condition especially Korotoa, Teesta, Rupsha, Pashur and Padma. The pollutants flowing with water made a severe pollution in downstream areas of rivers. Metals concentrations in river water was found to be higher in dry season. Dissolve oxygen (DO) was nearly zero in Buriganga River and several points in Turag, Balu, Sitalakhya and Karnaphuli River. NO3-, NO2- and PO43- pollution occurred in different rivers. Zn, Cu, Fe, Pb, Cd, Ni, Mn, As and Cr concentration was above drinking water standard in most of the river and some metals was even above irrigation standard in water from several rivers. Sediment data showed very much higher metal concentrations in most of the rivers especially peripheral rivers in Dhaka and Karnaphuli, Korotoa, Teesta, Rupsha and Meghna River. Metal concentrations in sediment was above US EPA threshold value in most of the rivers. Metal concentrations in fish and agricultural crops showed that bioaccumulations of metals had occurred. The concentration of metals showed the trend like: water<fish<sediment. Agricultural crops were found to contain toxic metals through polluted water irrigation. The calculated data of daily intake for the non-carcinogenic and carcinogenic showed that consumption of the contaminated foodstuff can cause serious health injuries.
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Affiliation(s)
- Md. Jamal Uddin
- Department of Soil and Environmental Sciences, University of Barisal, Bangladesh
- Corresponding author.
| | - Yeon-Koo Jeong
- Solid and Hazardous Waste Management Laboratory, Department of Environmental Engineering, Kumoh National Institute of Technology, South Korea
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42
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Nguyen A, Richter O, Le BV, Phuong NTK, Dinh KC. Long-Term Heavy Metal Retention by Mangroves and Effect on Its Growth: A Field Inventory and Scenario Simulation. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17239131. [PMID: 33297439 PMCID: PMC7729893 DOI: 10.3390/ijerph17239131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/30/2020] [Accepted: 12/05/2020] [Indexed: 11/29/2022]
Abstract
The ability of mangroves in taking up and storing heavy metal (HM) helps in reducing HM pollution. However, HMs likewise adversely affect the growth of mangroves. We assess the effects of the long-term soil HMs enrichment on the growth of Rhizophora apiculata forest in the Can Gio Mangrove Forest (Southern Vietnam) in different environmental conditions of soil salinity, ground elevation, and tree density based on a novel set of measured data. These data were analyzed and were used to calibrate and validate for a tree growth model with influencing factors salinity, elevation, tree density, and heavy metals content. Three scenario simulations were performed to predict the mangrove dynamics under different levels of heavy metal pollution in combined environmental conditions of salinity and elevation. Simulation results show the decline of total forest biomass from 1,750,000 tons (baseline scenario with no HM pollution) down to 850,000 tons and 350,000 tons for the current HM pollution and double HM pollution scenarios, respectively. Both data analysis and simulations have shown that although mangroves can assist in reducing HM pollution, the quality and health of this ecosystem will be severely affected if the environment is excessively polluted. In addition, a data-and-model driven management tool is devised for the sustainable management of the mangrove environmental resources.
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Affiliation(s)
- Anh Nguyen
- Institute for Environment and Resources, Vietnam National University Ho Chi Minh City, 142 To Hien Thanh, District 10, Ho Chi Minh City 72506, Vietnam; (B.V.Q.L.); (K.C.D.)
- Correspondence: ; Tel.: +84-763-323-328
| | - Otto Richter
- Institute of Geoecology, Technical University of Braunschweig, 38106 Braunschweig, Germany;
| | - Bao V.Q. Le
- Institute for Environment and Resources, Vietnam National University Ho Chi Minh City, 142 To Hien Thanh, District 10, Ho Chi Minh City 72506, Vietnam; (B.V.Q.L.); (K.C.D.)
| | - Nguyen Thi Kim Phuong
- National Institute of Applied Mechanics and Informatics, Vietnam Academy of Science and Technology, 291 Dien Bien Phu, District 3, Ho Chi Minh City 722007, Vietnam;
| | - Kim Chi Dinh
- Institute for Environment and Resources, Vietnam National University Ho Chi Minh City, 142 To Hien Thanh, District 10, Ho Chi Minh City 72506, Vietnam; (B.V.Q.L.); (K.C.D.)
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43
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Jiang R, Huang S, Wang W, Liu Y, Pan Z, Sun X, Lin C. Heavy metal pollution and ecological risk assessment in the Maowei sea mangrove, China. MARINE POLLUTION BULLETIN 2020; 161:111816. [PMID: 33157505 DOI: 10.1016/j.marpolbul.2020.111816] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 06/11/2023]
Abstract
The level and ecological impact of heavy metal pollution in the Maowei Sea mangrove are poorly understood. This work first investigated the distribution and ecological risk of Cd, Co, Cr, Cu, Mn, Ni, Pb, and Zn in Maowei Sea mangrove sediments. The results showed that heavy metals were mainly concentrated in the top 10 cm of mangrove stands, declined up to 20 cm deep, and were constant afterwards. Exceptionally, Mn concentration increased significantly with depth in the mudflat. Multiple environmental risk indices indicated that the investigated area was broadly contaminated by heavy metals and that Cd was the dominant contributor to potential ecological risks. However, the biological toxicity posed by these metals was negligible. Multivariate analyses implied that Cd, Co, Cr, Cu, Ni, Pb, and Zn originated mainly from anthropogenic sources, whereas Mn was primarily from natural processes. These findings could provide insightful information for future management of this mangrove.
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Affiliation(s)
- Ronggen Jiang
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Shuyuan Huang
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Weili Wang
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Yang Liu
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Zhong Pan
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China.
| | - Xiuwu Sun
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Cai Lin
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China.
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44
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Assessment the Seasonal Variability and Enrichment of Toxic Trace Metals Pollution in Sediments of Damietta Branch, Nile River, Egypt. WATER 2020. [DOI: 10.3390/w12123359] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
This work appraises the extent of toxic trace metals and seasonal pollution degree in Damietta branch sediments of the River Nile of Egypt. The toxic trace metals Fe, Mn, Cd, Co, Cu, Ni, Pb, and Zn were analysed in sediments from six sites during the summer and winter seasons. The metal concentrations and organic matter were determined using inductively-coupled-plasma mass spectrometry and loss-on-ignition, respectively. Multivariate statistical methods were used in order to allocate the possible metals sources and their relationships in sediments. The seasonal mean sequence of toxic trace metals was: Fe > Mn > Zn > Pb > Cu > Ni > Co > Cd. The mean Cd, Pb, and Zn values exceeded the sediment quality guidelines and average shale and they represent severe potential toxicity for aquatic organisms. Cu and Co were enriched during winter. The geo-accumulation index stipulated that metal pollution degree in the sequence of: Pb > Zn > Cd > Co > Cu > Mn > Ni > Fe. The highest metal pollution index reported in winter in sites S4/S5 and during summer in sites S4–S6. Different agricultural, wastewater discharge, fisheries, and industrial activities, as well as the effect of dilution/concentration during summer/winter seasons, are the main factors that contributed to metal accumulations in Damietta branch sediments. Continuous monitoring and evaluation of toxic trace metal concentrations of the Damietta sediments and similar localities worldwide can help to protect the ecosystem from harmful metal contaminations.
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45
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Verâne J, Dos Santos NCP, da Silva VL, de Almeida M, de Oliveira OMC, Moreira ÍTA. Phytoremediation of polycyclic aromatic hydrocarbons (PAHs) in mangrove sediments using Rhizophora mangle. MARINE POLLUTION BULLETIN 2020; 160:111687. [PMID: 33181957 DOI: 10.1016/j.marpolbul.2020.111687] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 09/12/2020] [Accepted: 09/14/2020] [Indexed: 06/11/2023]
Abstract
A phytoremediation experiment was carried out in mesocosms to investigate the performance of Rhizophora mangle in the remediation of polycyclic aromatic hydrocarbons (PAHs) in mangrove sediment contaminated with crude oil. The water pH of the experiments (phytoremediation and natural attenuation) ranged from 4.9 to 8.4 at 0 and 90 days, respectively. The oxy-reduction potential (Eh) ranged from oxidising (108.0 mV, time 0) to reducing (approximately -110.0 mV, time 90) environments. Dissolved oxygen (DO) ranged from 5.7 mg L-1 (time 0) to 4.5 mg L-1 and 3.6 mg L-1 (time 90) in phytoremediation and natural attenuation, respectively. The sediments had silty texture and an average concentration of 5% organic matter (OM). Phytoremediation (60.76%) showed better efficiency in the remediation of the 16 PAHs compared to natural attenuation (49.57%). Principal component analyses showed a correlation between the concentrations of PAHs with pH, Eh, OM and DO in both experiments.
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Affiliation(s)
- Jéssica Verâne
- Geoscience Institute, Federal University of Bahia (UFBA), Street Barão de Jeremoabo, s/n, 40170-290 Salvador, BA, Brazil.
| | - Naiara C P Dos Santos
- Department of Environmental Engineering, Polytechnic School, Federal University of Bahia (UFBA), Street Prof. Aristídes Novis, 2, Federação, 40170290 Salvador, BA, Brazil
| | - Verônica L da Silva
- Department of Environmental Engineering, Polytechnic School, Federal University of Bahia (UFBA), Street Prof. Aristídes Novis, 2, Federação, 40170290 Salvador, BA, Brazil
| | - Marcos de Almeida
- Geoscience Institute, Federal University of Bahia (UFBA), Street Barão de Jeremoabo, s/n, 40170-290 Salvador, BA, Brazil
| | - Olívia M C de Oliveira
- Geoscience Institute, Federal University of Bahia (UFBA), Street Barão de Jeremoabo, s/n, 40170-290 Salvador, BA, Brazil
| | - Ícaro T A Moreira
- Department of Environmental Engineering, Polytechnic School, Federal University of Bahia (UFBA), Street Prof. Aristídes Novis, 2, Federação, 40170290 Salvador, BA, Brazil.
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46
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Source Apportionment Assessment of Marine Sediment Contamination in a Post-Industrial Area (Bagnoli, Naples). WATER 2020. [DOI: 10.3390/w12082181] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The area of Bagnoli (Gulf of Naples, central Tyrrhenian Sea) has been heavily exposed to pollution for over a century due to the presence of industrial sites along its coastline. The aim of this study is to analyze contaminant concentrations (i.e., heavy metals and hydrocarbons) in seabed sediments through a statistical multivariate approach. Multivariate methods permit us to describe the pollution dynamics affecting the area and distinguish between anthropogenic and natural pollution sources. Additionally, the association between contamination patterns and the wave climate characteristics of the gulf (i.e., wave period, direction, height, power, and energy) is investigated. The study confirms that the main contamination source in the Bagnoli bay is anthropogenic activities (i.e., former steel plant and sewage discharges) for the majority of investigated pollutants. It also provides evidence, however, for the potential co-existence of multiple anthropogenic and geogenic sources of arsenic and other metals that may be originating also from the water-rock interaction and submarine volcanic emissions in the Phlegraean area.
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47
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Assessing Energy-Based CO2 Emission and Workers’ Health Risks at the Shipbreaking Industries in Bangladesh. ENVIRONMENTS 2020. [DOI: 10.3390/environments7050035] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The study represents the estimation of energy-based CO2 emission and the health risks of workers involved in the shipbreaking industries in Sitakunda, Bangladesh. To calculate the carbon emission (CE) from three shipbreaking activities, i.e., metal gas cutting (GC), diesel fuel (FU) and electricity consumption (EC), we used the Intergovernmental Panel on Climate Change (IPCC) guidelines and Environmental Protection Agency (EPA)’s Emission and Generation Resource Integrated Database (eGRID) emission factors. Moreover, the geographic weighted regression (GWR) model was applied to assess the contribution of influencing factors of CE throughout the sampling points. To assess the workers’ health condition and their perceptions on environmental degradation, a semi-structured questionnaire survey among 118 respondents were performed. The results showed that total CO2 emissions from GC were 0.12 megatons (MT), 11.43 MT, and 41.39 MT for daily, monthly, and yearly respectively, and the values were significantly higher than the surrounding control area. Emissions from the FU were estimated as daily: 0.85 MT, monthly: 1.92 MT, and yearly: 17.91 MT, which were significantly higher than EC. The study also revealed that workers were very susceptible to accidental hazards especially death (91%), and pollution (79%). Environmental consequences and health risks of the workers in shipbreaking industry warrant more attention nationally and internationally at the industry-level.
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48
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Hossain MS, Ahmed MK, Sarker S, Rahman MS. Seasonal variations of trace metals from water and sediment samples in the northern Bay of Bengal. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 193:110347. [PMID: 32114239 DOI: 10.1016/j.ecoenv.2020.110347] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 02/14/2020] [Accepted: 02/15/2020] [Indexed: 05/24/2023]
Abstract
We aimed to determine the temporal variation of trace metals concentrations in surface water and surface sediment samples at Kutubdia Channel, Bangladesh. Trace metals of samples were detected using energy dispersive X-ray fluorescence (Energy-dispersive X-ray spectroscopy) method. The lowest concentration of metals was found in water samples during post-monsoon season and the highest during pre-monsoon season (Cu: 0.030 ± 0.001 μg/L in pre-monsoon and 0.026 ± 0.002 μg/L in post-monsoon, Zn: 0.087 ± 0.003 μg/L in pre-monsoon and 0.073 ± 0.002 μg/L in post-monsoon, Fe: 0.080 ± 0.001 μg/L in pre-monsoon and 0.055 ± 0.001 μg/L in post-monsoon). In contrast, metal concentration in surface sediment samples were higher in post-monsoon than in pre-monsoon season i.e. Cr 11 mg/kg in pre-monsoon and 12 mg/kg in post-monsoon, Mn 571 mg/kg in pre-monsoon and 606 mg/kg in post-monsoon, As (8 mg/kg in pre-monsoon and 10 mg/kg in post-monsoon, Pb (22 mg/kg in pre-monsoon and 24 mg/kg in post-monsoon, and Fe 2317 mg/kg in pre-monsoon and 2435 mg/kg in post-monsoon. We found a spatial gradient of high to medium to low in trace metal concentration from river to river mouth to offshore area. Considering the sources of metals, land erosion by waves and tidal action, an influx of water and sediment from the surrounding rivers, agricultural waste, industrial effluent and sewage are the most likely sources of metal pollution in the study area. We conclude that proper management strategies should be adopted to control the pollution and conserve the ecosystem health.
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Affiliation(s)
- Md Solaiman Hossain
- Department of Oceanography, University of Dhaka, Dhaka 1000, Bangladesh; Department of Oceanography, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh.
| | - Md Kawser Ahmed
- Department of Oceanography, University of Dhaka, Dhaka 1000, Bangladesh.
| | - Subrata Sarker
- Department of Oceanography, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh.
| | - M Safiur Rahman
- Environmental and Atmospheric Chemistry Laboratory, Atomic Energy Center, Bangladesh Atomic Energy Commission, Dhaka 1000, Bangladesh.
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49
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Heavy Metal Accumulation and Anti-Oxidative Feedback as a Biomarker in Seagrass Cymodocea serrulata. SUSTAINABILITY 2020. [DOI: 10.3390/su12072841] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The pursuit of a good candidate to biomonitor environmental pollutants has been on the increase. In this study, the concentrations of Fe, Mn, Cu, Zn, Cd, Cr, Pb and Ni in sediment, seawater and seagrass Cymodocea serrulata compartments and antioxidant enzymes activities in C. serrulata were determined. Our results revealed that bioconcentration factors for all the metals were less than 1 (BCF < 1) and concentrations in seagrass compartments were in the order root > leaf > rhizome for Fe and Mn, leaf > root > rhizome for Cu, Zn, Pb and Ni, and root > rhizome > leaf for Cd and Cr. Effect range low concentrations (ER-L) revealed that Cu, Zn, Cd, Pb and Ni concentrations were above ER-L values and Cr concentration was below ER-L values while concentrations in seawater for all the heavy metals were above the estimate average element concentrations in seawater (ECS). Significant variation (p < 0.05) was recorded for heavy metals in sediment, seawater, seagrass compartments and heavy metal concentrations across stations. Influence of heavy metals on antioxidant enzymes activities; catalase (CAT), superoxide dismutase (SOD), glutathione S-transferase (GST) and acetylcholinesterase (AChE) were recorded, and high activities of the antioxidants were recorded in station S8 corresponding to high concentrations of heavy metals in the same station. There is a need for the promotion of biomonitoring networks across the marine environment using C. serrulata and antioxidant enzymes as biomarkers of oxidative stress caused by environmental pollutants.
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50
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Aljahdali MO, Alhassan AB. Ecological risk assessment of heavy metal contamination in mangrove habitats, using biochemical markers and pollution indices: A case study of Avicennia marina L. in the Rabigh lagoon, Red Sea. Saudi J Biol Sci 2020; 27:1174-1184. [PMID: 32256181 PMCID: PMC7105697 DOI: 10.1016/j.sjbs.2020.02.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 02/01/2020] [Accepted: 02/02/2020] [Indexed: 01/31/2023] Open
Abstract
Contamination of mangrove ecosystems, including those of the Red Sea area, has caused serious concern globally. Spatial distribution of heavy metals and their bioaccumulation in one of the common mangrove plants of Saudi Arabia, Avicennia marina L., was evaluated in 8 stations at the Rabigh lagoon to assess the ecological risks due to heavy metal contamination. Among all the heavy metals, Fe concentration was recorded highest (8939.38 ± 312.63 mg/kg) at station S4. Contamination factor (CF) values for all heavy metals determined in this study were recorded in ascending order as Cu < Cr < Mn < Zn < Fe < Ni < Pb < Cd, with the pollution load index pattern recorded in descending order as S6 > S4 > S3 > S5 > S7 > S1 > S8 > S2. Bio-concentration factor (BCF) was <1 for all the heavy metals and there was a positive correlation between the antioxidants and lead (Pb), which can be a result of the ability of A. marina to exclude or detoxify this metal by its mechanism of exclusion or detoxification. A significant correlation existed between the heavy metals concentration in sediment and A. marina leaves at one combination or the other, except for Cu and Cd, which do not correlate with any other metal concentration. The information provided in the present study can be used in the monitoring and measurement of heavy metal pollution in marine ecosystems or other aquatic environments, to prevent several ecological risks to the mangrove ecosystem.
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Affiliation(s)
- Mohammed O Aljahdali
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Abdullahi Bala Alhassan
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
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