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Pacín C, Fernández JÁ, Conde-Amboage M, Lazzari M, García-Seoane R, G Viana I, Varela Z, Real C, Villares R, Aboal JR. Three Decades of Change in Potentially Toxic Elements in Brown Algae in the Northeast Atlantic Ocean. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2025. [PMID: 40401394 DOI: 10.1021/acs.est.4c14013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2025]
Abstract
Marine pollution from potentially toxic elements (PTEs) threatens coastal ecosystems, making long-term assessments essential. This study analyzes trends in Al, Cr, Fe, Ni, Cu, Zn, As, Cd, and Hg using 446 samples of Fucus ceranoides, F. spiralis, and F. vesiculosus collected between 1990 and 2021 at 173 coastal sites in NW Spain. A consistent resampling approach revealed significant declines in most anthropogenic PTEs, including Cu (-84.7%), Cr (-84.6%), Hg (-49.6%), and Cd (-36.7%) over time. In contrast, arsenic increased by 36.1%, but the underlying causes remain unclear, with potential factors including changes in sediment inputs, bioavailability, or emerging sources such as groundwater discharges. Higher PTE levels were detected in inner estuarine areas, but no consistent latitudinal patterns emerged. Overall, the results suggest effective mitigation of coastal pollution, with reduced bioavailable PTEs entering the food web via Fucus spp. However, rising As levels and complex contamination dynamics underscore the need for continued monitoring. This study offers the most comprehensive standardized assessment of long-term PTE trends in brown algae to date, providing valuable insights for environmental policy and coastal management.
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Affiliation(s)
- Carme Pacín
- CRETUS Centre, Department of Functional Biology, Ecology Unit, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
- CIQUS Centre, Department of Physical Chemistry, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - J Ángel Fernández
- CRETUS Centre, Department of Functional Biology, Ecology Unit, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Mercedes Conde-Amboage
- Department of Statistics, Mathematical Analysis and Optimization, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Massimo Lazzari
- CIQUS Centre, Department of Physical Chemistry, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Rita García-Seoane
- Instituto Español de Oceanografía (IEO-CSIC), Centro Oceanográfico de A Coruña, A Coruña 15001, Spain
- Department of Earth Sciences, University of Hawaii at Ma̅noa, 1680 East-West Road, POST 719B, Honolulu, Hawaii 96822, United States
| | - Inés G Viana
- Instituto Español de Oceanografía (IEO-CSIC), Centro Oceanográfico de A Coruña, A Coruña 15001, Spain
| | - Zulema Varela
- CRETUS Centre, Department of Functional Biology, Ecology Unit, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Carlos Real
- Department of Functional Biology, Ecology Unit, Universidade de Santiago de Compostela, Escola Politécnica Superior de Enxeñaría, Lugo 27002, Spain
| | - Rubén Villares
- Department of Functional Biology, Ecology Unit, Universidade de Santiago de Compostela, Escola Politécnica Superior de Enxeñaría, Lugo 27002, Spain
| | - Jesús R Aboal
- CRETUS Centre, Department of Functional Biology, Ecology Unit, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
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2
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Liu T, Zhang Y, Liu Y, Chen B. Multi-indicator assessment of heavy metal pollution in Qinzhou Harbour sediments: Unraveling ecological and human health risks. MARINE POLLUTION BULLETIN 2025; 211:117442. [PMID: 39674043 DOI: 10.1016/j.marpolbul.2024.117442] [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: 10/09/2024] [Revised: 12/04/2024] [Accepted: 12/06/2024] [Indexed: 12/16/2024]
Abstract
The study of heavy metal content in the sediments of the coastal zone of Qinzhou Harbour was used to analyse the level, distribution and sources of heavy metal pollution in the region and its hazards to the ecological environment and human health. The results showed that the average concentrations of Mn, Ni, Cr, Cu, and Pb exceeded background values along the shores of Qinzhou Harbour, Guangxi. Comprehensive assessments using Igeo, RI, and PLI identified Cu, Ni, and Pb as primary contaminants in the area, presenting slight to moderate ecological risks and biological toxic effects. Source analysis suggested that these metals primarily originated from anthropogenic activities including shipbuilding, chemical plant discharges, oil refining, and industrial smelting. Integrating SQGs with human health risk models revealed carcinogenic risks associated with Ni exposure, particularly for children. However, noncarcinogenic risks were not significant, and the risk to children was higher than to adults.
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Affiliation(s)
- Tiansheng Liu
- College of Petroleum and Chemical Engineering, Beibu Gulf University, Qinzhou 515000, China
| | - Yuankai Zhang
- College of Petroleum and Chemical Engineering, Beibu Gulf University, Qinzhou 515000, China
| | - Yuying Liu
- College of Petroleum and Chemical Engineering, Beibu Gulf University, Qinzhou 515000, China
| | - Bo Chen
- College of Petroleum and Chemical Engineering, Beibu Gulf University, Qinzhou 515000, China; Guangxi Key Laboratory of Green Chemical Materials and Safety Technology, Qinzhou 515000, China.
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3
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Liang H, Wang G, Guo H, Niu L, Yang Q. Evaluation of heavy metal accumulation and sources in surface sediments of the Pearl River Estuary (China). MARINE ENVIRONMENTAL RESEARCH 2025; 204:106948. [PMID: 39778254 DOI: 10.1016/j.marenvres.2025.106948] [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: 05/28/2024] [Revised: 12/21/2024] [Accepted: 01/02/2025] [Indexed: 01/11/2025]
Abstract
The Pearl River Estuary (PRE) has experienced an influx of metals and nutrients, predominantly from the Pearl River, which has led to a potential threat to the estuarine ecosystem. In this study, sediment samples were densely collected to clarify the accumulation, and source contributions of heavy metals (namely Hg, Zn, Cu, As, Pb, Cd, and Cr) in the PRE. The spatial distributions of these metals exhibited significant differences, with higher values detected in the offshore areas and lower values further away. The metal values along the western coast tended to be significantly elevated compared to that of the eastern seaboard, which may relate to anthropogenic pollution, the discharge of industrial and domestic effluents in the region. The geological accumulation index (Igeo) was utilized to evaluate the pollution status, categorized as ranging from light to moderate pollution levels. The homology of metal elements was determined through Pearson correlation analysis and principal component analysis (PCA). A receptor model of positive matrix factorization (PMF) was developed to quantify the contributions of various sources to the accumulation of metal elements in the PRE. Industrial sources contributed the most to sediment metals (37.07%), followed by agricultural and natural sources, with transportation sources contributing the least (11.17%).
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Affiliation(s)
- Haihan Liang
- School of Ocean Engineering and Technology, Sun Yat-sen University, (Guangzhou)/Southern Laboratory of Ocean Science and Engineering (Zhuhai), China
| | - Guojuan Wang
- School of Ocean Engineering and Technology, Sun Yat-sen University, (Guangzhou)/Southern Laboratory of Ocean Science and Engineering (Zhuhai), China
| | - Hongying Guo
- School of Ocean Engineering and Technology, Sun Yat-sen University, (Guangzhou)/Southern Laboratory of Ocean Science and Engineering (Zhuhai), China
| | - Lixia Niu
- School of Ocean Engineering and Technology, Sun Yat-sen University, (Guangzhou)/Southern Laboratory of Ocean Science and Engineering (Zhuhai), China; Institute of Estuarine and Coastal Research, Guangdong Provincial Engineering Research Center of Coasts, Islands and Reefs, Guangzhou, China.
| | - Qingshu Yang
- School of Ocean Engineering and Technology, Sun Yat-sen University, (Guangzhou)/Southern Laboratory of Ocean Science and Engineering (Zhuhai), China; Institute of Estuarine and Coastal Research, Guangdong Provincial Engineering Research Center of Coasts, Islands and Reefs, Guangzhou, China
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4
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Huang F, Bello ST. Spatiotemporal analysis of regional and age differences in tuberculosis prevalence in mainland China. Trop Med Int Health 2024; 29:833-841. [PMID: 39044660 DOI: 10.1111/tmi.14037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
Globally, tuberculosis is a leading cause of infectious disease deaths. China ranks third among the 30 high-burden countries for tuberculosis and accounts for approximately 7.4% of the cases reported worldwide. Since very few studies have investigated the age difference in tuberculosis prevalence in mainland China, therefore, the preliminary characterisation of age differences in tuberculosis patients is not well understood. The data of reported sputum smear-positive, tuberculosis and sputum smear-negative cases in 340 prefectures from mainland China were extracted from the China Information System for Disease Control and Prevention from January 2009 to December 2018. Multiple statistical analysis and GIS techniques were used to investigate the temporal trend and identify the spatial distribution of sputum smear-positive, tuberculosis and sputum smear-negative cases in the study area. The results showed that the incidence of sputum smear-positive and tuberculosis has dropped to a stable level, while sputum smear-negative exhibited a rising trend. Additionally, sputum smear-positive, tuberculosis and sputum smear-negative are still highly prevalent in northwestern and southwestern regions of China. Interestingly, the young adult group (20-50 age) and elder group (>50 age) are more susceptible to being infected with tuberculosis, while lower infection levels were recorded in the juvenile group (<20 age). The present study investigated the temporal-spatial distribution of sputum smear-positive, tuberculosis and sputum smear-negative cases in mainland China before the COVID-19 pandemic breakout, which would help the government agency establish an effective mechanism of tuberculosis prevention in high-risk periods and high-risk areas in the study region.
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Affiliation(s)
- Fengwen Huang
- Department of Neuroscience, City University of Hong Kong, Kowloon Tong, China
- Centre for Regenerative Medicine and Health, Hong Kong Institute of Science & Innovation, Chinese Academy of Sciences, Hong Kong, China
| | - Stephen Temitayo Bello
- Department of Neuroscience, City University of Hong Kong, Kowloon Tong, China
- Centre for Regenerative Medicine and Health, Hong Kong Institute of Science & Innovation, Chinese Academy of Sciences, Hong Kong, China
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He F, Luo X, Heman A, Chen Z, Jia J. Anthropogenic perturbations on heavy metals transport in sediments in a river-dominated estuary (Modaomen, China) during 2003-2021. MARINE POLLUTION BULLETIN 2024; 199:115970. [PMID: 38171160 DOI: 10.1016/j.marpolbul.2023.115970] [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: 10/14/2023] [Revised: 12/09/2023] [Accepted: 12/21/2023] [Indexed: 01/05/2024]
Abstract
Heavy metal pollutants in sediment greatly impact the estuarine environment and ecosystems, increasingly influenced by anthropogenic perturbations. Here, we examined the surface sediments of the Modaomen estuary in 2003, 2015, and 2021 to understand how human-induced changes influence the fate of heavy metals in the estuary's sediments. The potential ecological risk index (RI) suggests Cd should be the priority pollutant for environmental pollution control due to its high toxicity coefficient. In each sampling period, two main sources were identified through normalized heavy metals and PCA-MLR: natural and mixed anthropogenic sources (agricultural, industrial, and traffic activities), reflecting an increase in heavy metals pollution, later mitigated by successful environmental protection measures. Moreover, anthropogenic activities have not only impacted the sources discharge of heavy metals but have also influenced their spatial and temporal distribution through factors such as land reclamation, leading to sediment coarsening and reduced heavy metal content in specific areas.
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Affiliation(s)
- Fangting He
- State Key Laboratory of Estuarine and Coastal Research, School of Marine Sciences, East China Normal University, Shanghai 200241, China
| | - Xiangxin Luo
- Institute of Estuarine and Coastal Research/State and Local Joint Engineering Laboratory of Estuarine Hydraulic Technology, School of Ocean Engineering and Technology, Sun Yat-sen University, Guangzhou 510275, China.
| | - Ali Heman
- Institute of Estuarine and Coastal Research/State and Local Joint Engineering Laboratory of Estuarine Hydraulic Technology, School of Ocean Engineering and Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Zhenkai Chen
- Institute of Estuarine and Coastal Research/State and Local Joint Engineering Laboratory of Estuarine Hydraulic Technology, School of Ocean Engineering and Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Jianjun Jia
- State Key Laboratory of Estuarine and Coastal Research, School of Marine Sciences, East China Normal University, Shanghai 200241, China.
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Jiang JJ, Yan H, Wang X, Su H. Sediment mercury concentration of a subtropical mangrove wetland responded to Hong Kong-Shenzhen industrial development since the 1960s. MARINE POLLUTION BULLETIN 2023; 192:115047. [PMID: 37201351 DOI: 10.1016/j.marpolbul.2023.115047] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/26/2023] [Accepted: 05/06/2023] [Indexed: 05/20/2023]
Abstract
Mercury (Hg) in coastal wetlands is of great concern due to its acute toxicity. We measured the total Hg content (THg) from a 210Pb-dated sediment core obtained from the Futian mangrove wetland in Shenzhen Bay, South China to explore the historical variation and possible sources. Our results extend the sediment THg record back to 1960 and reveal three distinct intervals. Interval I (1960-1974) has low and increasing THg values, averaging 83.0 μg/kg; Interval II (1975-1984) witnesses a remarkably increase, peaking in 1980 (261.6 μg/kg) then remaining elevated; Interval III (1985-2014) shows a steady reduction, averaging 118.4 μg/kg. The good correlation among THg, TOC, and Hg/TOC, and the downstream decrease in monitoring sediment THg consistently suggest that the bulk THg are mainly sourced from the Shenzhen River discharge. The different timing in industrial development attributes the elevated THg concentrations during 1975-1984 to Hong Kong industrial sewage pollution.
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Affiliation(s)
- Jenny J Jiang
- Guangzhou Zhixin High School, Guangzhou 510105, China
| | - Hongyu Yan
- College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Xufeng Wang
- School of Environment, Jinan University, Guangzhou 510632, China
| | - Hong Su
- College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
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7
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Liu X, Sheng Y, Liu Q, Li Z. Ecological and environmental risks of heavy metals in sediments in Dingzi Bay, South Yellow Sea. MARINE POLLUTION BULLETIN 2023; 188:114683. [PMID: 36739715 DOI: 10.1016/j.marpolbul.2023.114683] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 01/26/2023] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
As a special geographical location between rivers and oceans, coastal estuaries always face severe heavy metal contaminations, especially in semi-closed bay. In this study, the spatial distribution, chemical fraction, ecological risks, and potential sources of heavy metals (Pb, Cr, Cu, As, Cd, Zn, and Ni) in surface sediments and sediment cores were investigated in Dingzi Bay, Shandong Peninsula. The Igeo values and modified potential ecological risk index (MRI) indicated that Cd and As presented high environmental risks in the surface and sediment cores. The high concentration sites were mainly located in the middle and the mouth of the Dingzi Bay. The source identification indicated that most heavy metals in surface sediments originated from shipping and aquaculture, while As and Ni from industrial pollution. The correlation coefficients showed that high proportion of fine particle, TN, TOC, TP, and AVS in surface sediments could significantly elevate the bioavailability of most heavy metals.
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Affiliation(s)
- Xiaozhu Liu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; University of Chinese Academy of Sciences, Beijing, China
| | - Yanqing Sheng
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.
| | - Qunqun Liu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Zhaoran Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
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Chen CF, Lim YC, Ju YR, Albarico FPJB, Chen CW, Dong CD. Comparing the applicability of ecological risk indices of metals based on PCA-APCS-MLR receptor models for ports surface sediments. MARINE POLLUTION BULLETIN 2022; 185:114361. [PMID: 36403305 DOI: 10.1016/j.marpolbul.2022.114361] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 11/03/2022] [Accepted: 11/10/2022] [Indexed: 06/16/2023]
Abstract
This study collected surface sediments from seven ports in Taiwan and analyzed their characteristics along with 10 metals. Enrichment factor (EF), relative EF (REF), potential ecological risk index (PERI), and mean effect range median quotient (m-ERM-q) were used to evaluate the levels of metal contamination and ecological risks in sediments. Principal component analysis (PCA) and the absolute principal component score-multiple linear regression (APCS-MLR) model were applied to quantify the main factors affecting the variations in sediment metals. The different normalization techniques that vary between indexes significantly affect the estimates of risk levels for sediment metals. APCS-MLR model confirmed the significant difference among the sediment quality indices in the degree of anthropogenic pollution, ranging in the order of REF (normalized with reference site and Fe, 97.0 %), PERI (normalized with reference site, 85.5 %), EF (normalized with crust and Fe, 79.4 %), and m-ERM-q (not normalized, 56.6 %).
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Affiliation(s)
- Chih-Feng Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Yee Cheng Lim
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Yun-Ru Ju
- Department of Safety, Health and Environmental Engineering, National United University, Miaoli 36063, Taiwan
| | - Frank Paolo Jay B Albarico
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; College of Fisheries and Allied Sciences, Northern Negros State College of Science and Technology, Sagay City 6122, Philippines
| | - Chiu-Wen Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
| | - Cheng-Di Dong
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
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Spatial distribution and source identification for heavy metals in surface sediments of East Dongting Lake, China. Sci Rep 2022; 12:7940. [PMID: 35562582 PMCID: PMC9106674 DOI: 10.1038/s41598-022-12148-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 04/29/2022] [Indexed: 11/10/2022] Open
Abstract
Dongting Lake is one of the most important inland freshwater lakes in China. To investigate the spatial distribution and seasonal variation characteristics of heavy metals (Cr, Co, Cu, Zn, Cd, and Pb) in the lake, 53 surface sediment samples were collected in the East Dongting Lake (ED Lake) in the wet and dry seasons. Results show Cr, Co, Cu, Zn, Cd, and Pb contents were 1.7 (1.9), 1.8 (2.0), 2.9 (3.0), 1.9 (1.9), 11.7 (13.1), and 2.0 (2.2)-fold of their geochemical soil background values of Hunan province (China) in the wet (dry) season. Spatial and seasonal heterogeneity could be found in the distribution of Cr, Co, Cu, Zn, and Pb in the surface sediments. The enrichment factor (EF) suggested that Cd has reached severe enrichment in the sediment. The result of the geo-accumulation index (\documentclass[12pt]{minimal}
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\begin{document}$${I}_{geo}$$\end{document}Igeo) indicated that Cr, Co, Cu, Zn, and Pb were at levels corresponding to low contamination, and moderately to highly polluted with Cd. Multivariate statistical analysis including pearson correlation analysis and principal component analysis was used for the identification of potential sources of the heavy metals in the sediments. The results showed that Cu, Zn, and Pb from the sediments of the East Dongting Lake in the wet and dry seasons were possibly anthropogenic sources, such as emissions from mining and smelting while Al, Fe, and Cr are attributed for natural sources. Cd enrichment in the sediments is influenced by both natural factors, and human activities in local areas.
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Liu S, Xiao Q, Wang F, Zhong S, Chen Y, Guo Y, Su K, Huang M, Chen X, Zhu Z, Lu S. Arsenic speciation in shellfish from South China Sea: Levels, estimated daily intake and health risk assessment. MARINE POLLUTION BULLETIN 2022; 178:113651. [PMID: 35447439 DOI: 10.1016/j.marpolbul.2022.113651] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/29/2022] [Accepted: 04/05/2022] [Indexed: 06/14/2023]
Abstract
The purposes of this study were to measure the concentrations of arsenic speciation in shellfish from South China Sea and evaluate the health risk by local residents through shellfish consumption. The median concentrations (in wet weight) of arsenic speciation in shellfish samples were in the following order: AsB (16.0 mg·kg-1) > DMA (1.30 mg·kg-1) > AsV (0.23 mg·kg-1) > AsC (0.08 mg·kg-1) > AsIII (0.05 mg·kg-1) > MMA (0.01 mg·kg-1). Among shellfish species, Mactra mera and Babylonia areolata were found to accumulate iAs and AsB, respectively. The target hazard quotient values of iAs (THQiAs) in all shellfish samples were lower than 1. However, the carcinogenic risk values of iAs (CRiAs) in the Mactra mera, Mytilus galloprovincialis and Pinctada margaritifera were beyond the acceptable range, implying that continuous exposure to iAs pollution via the consumption of these shellfish would pose a potential cancer risk to local consumers.
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Affiliation(s)
- Shan Liu
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China; Guiyang Center for Disease Control and Prevention, Guiyang 550003, China
| | - Qinru Xiao
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Fu Wang
- Longhua District Center for Disease Control and Prevention, Shenzhen 518054, China
| | - Shihua Zhong
- Shenzhen Institute of Quality & Safety Inspection and Research, Shenzhen 518055, China
| | - Yining Chen
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Yichen Guo
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Kai Su
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Min Huang
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Xin Chen
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Zhou Zhu
- Shezhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Shaoyou Lu
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China.
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11
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Niu L, Li J, Luo X, Fu T, Chen O, Yang Q. Identification of heavy metal pollution in estuarine sediments under long-term reclamation: Ecological toxicity, sources and implications for estuary management. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 290:118126. [PMID: 34523508 DOI: 10.1016/j.envpol.2021.118126] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 07/30/2021] [Accepted: 09/05/2021] [Indexed: 06/13/2023]
Abstract
Sediment samples were collected to clarify the effect of changing sedimentary environment under long-term reclamation on heavy metals (Cr, Zn, Pb, Cu, Cd, and Ni) in a partially mixed estuary (Modaomen) of the Pearl River Delta. The ecological toxicity and source apportionment of these metals were discussed as well. The metal species during the 2010s (as 2015, 2018) was more enriched than that during the 2000s (as 2003) and 1990s (as 1991). This estuary overall suffered from a "moderate-to-high" pollution status. The element Cd was a major concern for the ecosystem's health because of its high toxicity. Sediment quality guidelines suggested that adverse biological effects were likely to be caused by Cu and Cd in the early adjustment stage, while the threats to marine organisms caused by the elements of Cu, Cr, Zn, and Ni were elevated during the 2010s. Two receptor models of PCA-MLR and PMF quantified the source types and contributions of these heavy metals. Strong intensity of industrial activities coupling with agricultural applications and import of adjacent seas were responsible for the enriched accumulation of heavy metals in sediments. Metal source apportionment would help to control the metal input into the estuary; identifying the role of sedimentary environment on heavy metals can inform the sediment quality management in the estuary.
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Affiliation(s)
- Lixia Niu
- School of Marine Engineering and Technology, Sun Yat-sen University (Guangzhou)/Southern Laboratory of Ocean Science and Engineering, Zhuhai, China; Institute of Estuarine and Coastal Research, Guangdong Provincial Engineering Research Center of Coasts, Islands and Reefs, Guangzhou, China
| | - Jiayi Li
- School of Geography and Planning, Sun Yat-sen University, Guangzhou, China
| | - Xiangxin Luo
- School of Marine Engineering and Technology, Sun Yat-sen University (Guangzhou)/Southern Laboratory of Ocean Science and Engineering, Zhuhai, China; Institute of Estuarine and Coastal Research, Guangdong Provincial Engineering Research Center of Coasts, Islands and Reefs, Guangzhou, China.
| | - Tao Fu
- School of Marine Engineering and Technology, Sun Yat-sen University (Guangzhou)/Southern Laboratory of Ocean Science and Engineering, Zhuhai, China
| | - Ou Chen
- School of Marine Engineering and Technology, Sun Yat-sen University (Guangzhou)/Southern Laboratory of Ocean Science and Engineering, Zhuhai, China
| | - Qingshu Yang
- School of Marine Engineering and Technology, Sun Yat-sen University (Guangzhou)/Southern Laboratory of Ocean Science and Engineering, Zhuhai, China; Institute of Estuarine and Coastal Research, Guangdong Provincial Engineering Research Center of Coasts, Islands and Reefs, Guangzhou, China
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12
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Radomirović M, Mijatović N, Vasić M, Tanaskovski B, Mandić M, Pezo L, Onjia A. The characterization and pollution status of the surface sediment in the Boka Kotorska Bay, Montenegro. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:53629-53652. [PMID: 34031837 DOI: 10.1007/s11356-021-14382-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 05/10/2021] [Indexed: 06/12/2023]
Abstract
Surface sediments collected from twelve stations in the Boka Kotorska Bay were analyzed for the level and distribution of twenty-six elements and ten oxides, grain sizes, organic matter, and carbonate content. Potentially toxic elements (Al, Fe, Mn, Cr, Zn, Ni, Cu, Pb, As, Co, U) were determined to assess the contamination status and potential environmental risk according to the single-element indices (enrichment factor (EF), geoaccumulation index (Igeo), contamination factor (CF)), and combined index (pollution load index (PLI)). The single-element indices EF and CF revealed that the surface marine sediment was moderately polluted with Pb, Cu, and Cr, while Igeo indicated moderate pollution with Ni > Cr > Zn > Cu > As and moderate to heavy pollution with Pb, as a result of the anthropogenic factors. The method of the combined effect of toxic elements, PLI, showed the highest pollution rate at the shipyard location in the Bay of Tivat. Pearson's correlation coefficient (r), principal component analysis (PCA), and cluster analysis (CA) were applied to highlight similarities and differences in the distribution of the investigated elements in the Bay, confirming the claim obtained by the pollution indices. The sediment contamination with most heavy metals, such as Cr, Zn, Ni, Cu, Pb, and As, has been identified in the Tivat Bay area.
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Affiliation(s)
- Milena Radomirović
- Innovation Center of the Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade, 11120, Serbia.
| | - Nevenka Mijatović
- Institute for Testing of Materials IMS, Bulevar Vojvode Mišića 43, Belgrade, 11000, Serbia
| | - Milica Vasić
- Institute for Testing of Materials IMS, Bulevar Vojvode Mišića 43, Belgrade, 11000, Serbia
| | - Bojan Tanaskovski
- Military Technical Institute, Ratka Resanovića 1, Belgrade, 11030, Serbia
| | - Milica Mandić
- Institute of Marine Biology, University of Montenegro, Put I bokeljske brigade 68, 85330, Kotor, Montenegro
| | - Lato Pezo
- Institute of General and Physical Chemistry, University of Belgrade, Studentski trg 12, Belgrade, 11000, Serbia
| | - Antonije Onjia
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade, 11120, Serbia
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Zhang R, Liu WC, Liu Y, Zhang HL, Zhao ZH, Zou LY, Shen YC, Lan WS. Impacts of anthropogenic disturbances on microbial community of coastal waters in Shenzhen, South China. ECOTOXICOLOGY (LONDON, ENGLAND) 2021; 30:1652-1661. [PMID: 33161467 DOI: 10.1007/s10646-020-02297-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/20/2020] [Indexed: 05/16/2023]
Abstract
During the urbanization, human activities have brought great changes to marine biodiversity and microbial communities of coastal water. Shenzhen is a coastal city that has developed rapidly over the past four decades, but the microbial communities and metabolic potential in offshore water are still not well characterized. Here, 16S rRNA gene V4-V5 sequencing was conducted to determine the microbial components from coastal waters in twenty selected areas of Shenzhen. The results showed a significant difference on the microbial composition between the western and eastern waters. Samples from western coast had more abundant Burkholderiaceae, Sporichthyaceae, Aeromonadaceae, and Methylophilaceae compared to eastern coast, and at the genus level, Candidatus Aquiluna, Aeromonas, Arcobacter, Ottowia and Acidibacter were significantly higher in western waters. There was also a notable difference within the western sample group, suggesting the taxa-compositional heterogeneity. Moreover, analysis of environmental factors and water quality revealed that salinity, pH and dissolved oxygen were relatively decreased in western samples, while total nitrogen, total phosphorus, chemical oxygen demand, and harmful marine vibrio were significantly increased compared to eastern waters. The results suggest the coastal waters pollution is more serious in western Shenzhen than eastern Shenzhen and the microbial communities are altered, which can be associated with anthropogenic disturbances.
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Affiliation(s)
- Rui Zhang
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, PR China.
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, Guangdong, 524088, PR China.
| | - Wen-Chao Liu
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, PR China
- College of Agriculture, Guangdong Ocean University, Zhanjiang, Guangdong, 524088, PR China
| | - Yu Liu
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, PR China
- College of Agriculture, Guangdong Ocean University, Zhanjiang, Guangdong, 524088, PR China
| | - Hong-Lian Zhang
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, PR China
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, Guangdong, 524088, PR China
| | - Zhi-Hui Zhao
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, PR China
- College of Agriculture, Guangdong Ocean University, Zhanjiang, Guangdong, 524088, PR China
| | - Ling-Yun Zou
- Baoan Women's and Children's Hospital, Jinan University, Shenzhen, 518102, PR China
| | - Yu-Chun Shen
- College of Fisheries, Guangdong Ocean University, Zhanjiang, Guangdong, 524088, PR China
| | - Wen-Sheng Lan
- Shenzhen R&D Key Laboratory of Alien Pest Detection Technology, The Shenzhen Academy of Science and Technology for Inspection and Quarantine, Technology Center for Animal and Plant Inspection and Quarantine, Shenzhen Customs, Shenzhen, 518010, PR China.
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14
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Zhang R, Liu Y, Zhao X, Zhang H, Zhao Z, Shang Z, Lan W. Eukaryotic communities in coastal water from Shenzhen in South China. ECOTOXICOLOGY (LONDON, ENGLAND) 2021; 30:1644-1651. [PMID: 33452970 DOI: 10.1007/s10646-020-02341-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/25/2020] [Indexed: 06/12/2023]
Abstract
Eukaryotic microorganisms are ubiquitous in the marine environment, and have a wide variety of ecosystem functions. Shenzhen is one of the most developed cities in South China, but the eukaryotic communities in the water along its coastlines remain poorly understood. The study applied 18S rRNA gene ITS (internal transcribed spacer) sequencing to identify the eukaryotic community from twenty sites of Shenzhen coast water. The alpha-diversity of the samples between these sites were significantly different, and the seawater of eastern coast had higher alpha-diversity compared to that of the western coast. The abundance of Chlorophyta was notably higher in the seawater of western coast, but Picozoa was relatively depleted. Specifically, Cryptocaryon, Pseudovorticella, and Cyclotella were significantly higher in the water of western coast, while Guinardia, Minutocellus, and Amoebophrya were increased in eastern samples. The spatially variations of eukaryotic microorganism community in the seawater of Shenzhen coast were associated with the water quality. The results have important significance for the understanding of coastal eukaryotic community, their interaction network, and build a foundation for future management and protection of coastal water quality.
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Affiliation(s)
- Rui Zhang
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, Guangdong, PR China.
- College of Food Science and Technology, Modern Biochemistry Experimental Center, Guangdong Ocean University, Zhanjiang, 518088, Guangdong, PR China.
| | - Yu Liu
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524088, Guangdong, PR China
| | - Xianfeng Zhao
- R&D Key Laboratory of Alien Pest Detection Technology, the Shenzhen Academy of Science and Technology for Inspection and Quarantine. Technology Center for Animal and plant Inspection and Quarantine, Shenzhen Customs, Shenzhen, 518045, Guangdong, PR China
| | - Honglian Zhang
- College of Food Science and Technology, Modern Biochemistry Experimental Center, Guangdong Ocean University, Zhanjiang, 518088, Guangdong, PR China
| | - Zhihui Zhao
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524088, Guangdong, PR China
| | - Zhuangzhuang Shang
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, Guangdong, PR China
- College of Food Science and Technology, Modern Biochemistry Experimental Center, Guangdong Ocean University, Zhanjiang, 518088, Guangdong, PR China
| | - Wensheng Lan
- R&D Key Laboratory of Alien Pest Detection Technology, the Shenzhen Academy of Science and Technology for Inspection and Quarantine. Technology Center for Animal and plant Inspection and Quarantine, Shenzhen Customs, Shenzhen, 518045, Guangdong, PR China.
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15
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Zhang R, Liu Y, Zhao X, Zhao Z, Zhang H, Huang X, Xu W, Shen Y, Lan W. High-throughput sequencing reveals the spatial distribution variability of microbial community in coastal waters in Shenzhen. ECOTOXICOLOGY (LONDON, ENGLAND) 2021; 30:1429-1436. [PMID: 33755841 DOI: 10.1007/s10646-021-02391-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/08/2021] [Indexed: 06/12/2023]
Abstract
Seashore habitats are located between terrestrial and marine ecosystems, which are a hotspot for anthropogenic impacts. Shenzhen is one of the most developed cities in south China, but the microbial functions of its coastal ecosystems remain poorly understood. The study applied 16S rRNA gene sequencing methods to identify the bacterial community from twenty sites of Shenzhen inshore waters. The microbial structure of the samples between eastern Shenzhen and western Shenzhen seashores is notably different, suggesting the spatial variability. Proteobacteria, Cyanobacteria, Actinobacteria, and Bacteroidetes were dominant phyla in the community, and the relative abundance of Bacteroidetes was significantly higher in eastern seashores. Specifically, samples from western Shenzhen contained much more Prochlorococcus, while Synechococcus was more abundant in eastern samples. Moreover, the metabolism of terpenoids and polyketides, and transport and catabolism were significantly more abundant in eastern samples, while antibiotic-resistant pathways were enriched in western samples. The results have important significance to understand bacterial ecosystem of coastal water and promote water quality management and protection activity in Shenzhen. This study can also help developing an optimal strategy for the green economy development and the policy planning of Guangdong-Hong Kong-Macao Greater Bay Area.
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Affiliation(s)
- Rui Zhang
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, Guangdong, PR China
- College of Food Science and Technology, Modern Biochemistry Experimental Center, Guangdong Ocean University, Zhanjiang, 518088, Guangdong, PR China
| | - Yu Liu
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, Guangdong, PR China
- College of Food Science and Technology, Modern Biochemistry Experimental Center, Guangdong Ocean University, Zhanjiang, 518088, Guangdong, PR China
| | - Xianfeng Zhao
- Shenzhen R&D Key Laboratory of Alien Pest Detection Technology, The Shenzhen Academy of Science and Technology for Inspection and Quarantine, Technology Center for Animal and Plant Inspection and Quarantine, Shenzhen Customs, Shenzhen, 518045, Guangdong, PR China
| | - Zhihui Zhao
- College of Agriculture, Guangdong Ocean University, Zhanjiang, 524088, Guangdong, PR China
| | - Honglian Zhang
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, Guangdong, PR China
- College of Food Science and Technology, Modern Biochemistry Experimental Center, Guangdong Ocean University, Zhanjiang, 518088, Guangdong, PR China
| | - Xiaoping Huang
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, Guangdong, PR China
- College of Food Science and Technology, Modern Biochemistry Experimental Center, Guangdong Ocean University, Zhanjiang, 518088, Guangdong, PR China
| | - Weiqing Xu
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, Guangdong, PR China
- College of Food Science and Technology, Modern Biochemistry Experimental Center, Guangdong Ocean University, Zhanjiang, 518088, Guangdong, PR China
| | - Yuchun Shen
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, Guangdong, PR China
- College of Fisheries, Guangdong Ocean University, Zhanjiang, 524088, Guangdong, PR China
| | - Wensheng Lan
- Shenzhen R&D Key Laboratory of Alien Pest Detection Technology, The Shenzhen Academy of Science and Technology for Inspection and Quarantine, Technology Center for Animal and Plant Inspection and Quarantine, Shenzhen Customs, Shenzhen, 518045, Guangdong, PR China.
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16
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Radomirović M, Tanaskovski B, Pezo L, Ceccotto F, Cantaluppi C, Onjia A, Stanković S. Spatial and temporal distribution of pollution indices in marine surface sediments-a chemometric approach. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:42496-42515. [PMID: 33813708 DOI: 10.1007/s11356-021-13644-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
Concentrations of As, Cd, Cr, Cu, Hg, Mn, Ni, Pb, Zn, and Fe measured at forty locations in the Boka Kotorska Bay were used to monitor the spatial and temporal quality of sediment and to assess surface sediment contamination over the last 15 years. This ecological geochemistry assessment was made using two classes of pollution indices: single indices concerning the investigated elements (contamination factor (Cf)) and integrated indices concerning the locations (pollution load index (PLI), potential ecological risk index (RI), mean effects range median quotient (MERMQ), toxic risk index (TRI), contamination severity index (CSI)). The distribution of all indices was geostatistically mapped and several hotspots were identified. Based on the indices applied in the risk assessment, the mean contribution of individual metal species to the total risk was determined and presented in the following order: Cd > Hg > As > Pb > Ni > Cu > Cr > Zn. This study revealed that Cd and Hg were at the top of the risk list among the examined elements. The temporal distribution of Hg has shown a decreasing trend during the period 2005-2019, while the presence of Cd in the Bay environment is of major concern. The results revealed that the most polluted part of the investigated area was Tivat bay within the Boka Kotorska Bay. Multivariate statistical analysis of pollution indices resulted in multicollinearity, which enabled the use of a reduced number of indices with an acceptable risk estimation.
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Affiliation(s)
- Milena Radomirović
- Innovation Center of the Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade, 11120, Serbia.
| | - Bojan Tanaskovski
- Military Technical Institute, Ratka Resanovića 1, Belgrade, 11030, Serbia
| | - Lato Pezo
- Institute of General and Physical Chemistry, University of Belgrade, Studentski trg 12/V, Belgrade, 11158, Serbia
| | - Federica Ceccotto
- Environmental Laboratory, Institute of Condensed Matter Chemistry and Technologies for Energy, ICMATE-CNR, Corso Stati Uniti 4, 35127, Padua, Italy
| | - Chiara Cantaluppi
- Environmental Laboratory, Institute of Condensed Matter Chemistry and Technologies for Energy, ICMATE-CNR, Corso Stati Uniti 4, 35127, Padua, Italy
| | - Antonije Onjia
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade, 11120, Serbia
| | - Slavka Stanković
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade, 11120, Serbia
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17
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Liu H, Wang Y, Dong J, Cao L, Yu L, Xin J. Distribution Characteristics, Pollution Assessment, and Source Identification of Heavy Metals in Soils Around a Landfill-Farmland Multisource Hybrid District. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 81:77-90. [PMID: 34057581 DOI: 10.1007/s00244-021-00857-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 05/18/2021] [Indexed: 06/12/2023]
Abstract
Heavy-metal pollution is a negative impact of municipal solid-waste landfills. The multiple pollution transport pathways (including leachate, runoff, and waste gas) and complex and co-existing potential pollution sources (such as agricultural activities) around landfills require a combination of different pollution assessment methods and source identification tools to address pollution distribution and potential risks. In this study, the distributions of eight heavy metals (chromium (Cr), copper (Cu), nickel (Ni), lead (Pb), zinc (Zn), arsenic (As), cadmium (Cd), and mercury (Hg)) around a landfill were analyzed using 60 topsoil samples. Ecological risk assessments indicated that there are currently no ecological risks. Based on health risk assessments, however, high concentrations of Cr and As in the soil pose a noncarcinogenic and carcinogenic risk to humans in the study area, respectively. In addition, the geoaccumulation indices for Cr, Cu, Ni, Zn, As, and Hg confirmed anthropogenic sources of accumulation of these metals in soils. Additionally, the potential ecological risk index indicated that Hg posed a considerable risk to the ecology of the area around the landfill. Sources of heavy metals in the study area were attributed to natural sources (22.10%), agricultural activities (27.65%), landfill (31.35%), and transportation (18.89%). The continuous accumulation of heavy metals and health risk for humans suggests the need to continuously monitor of heavy metal content and migration around the landfill. This study provides a reference for local authorities in the study area.
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Affiliation(s)
- Honghua Liu
- Qingdao Geo-Engineering Surveying Institute (Qingdao Geological Exploration and Development Bureau); Key Laboratory of Urban Geology and Underground Space Resources; Shandong Provincial Bureau of Geology and Mineral Resources, Qingdao Geology and Geotechnical Engineering Co., Ltd, Qingdao, 266100, China
| | - Yuan Wang
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering; College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Jie Dong
- Qingdao Geo-Engineering Surveying Institute (Qingdao Geological Exploration and Development Bureau); Key Laboratory of Urban Geology and Underground Space Resources; Shandong Provincial Bureau of Geology and Mineral Resources, Qingdao Geology and Geotechnical Engineering Co., Ltd, Qingdao, 266100, China
| | - Lixue Cao
- Qingdao Geo-Engineering Surveying Institute (Qingdao Geological Exploration and Development Bureau); Key Laboratory of Urban Geology and Underground Space Resources; Shandong Provincial Bureau of Geology and Mineral Resources, Qingdao Geology and Geotechnical Engineering Co., Ltd, Qingdao, 266100, China
| | - Lili Yu
- Qingdao Geo-Engineering Surveying Institute (Qingdao Geological Exploration and Development Bureau); Key Laboratory of Urban Geology and Underground Space Resources; Shandong Provincial Bureau of Geology and Mineral Resources, Qingdao Geology and Geotechnical Engineering Co., Ltd, Qingdao, 266100, China
| | - Jia Xin
- Qingdao Geo-Engineering Surveying Institute (Qingdao Geological Exploration and Development Bureau); Key Laboratory of Urban Geology and Underground Space Resources; Shandong Provincial Bureau of Geology and Mineral Resources, Qingdao Geology and Geotechnical Engineering Co., Ltd, Qingdao, 266100, China.
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering; College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China.
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Ma L, Zhang T, Li Q, Wang T. Spatial distribution, risk assessment, and source identification of the potentially toxic elements in the water-level fluctuation zone of the Dahuofang Reservoir, Northeast China. ENVIRONMENTAL MONITORING AND ASSESSMENT 2021; 193:454. [PMID: 34184099 DOI: 10.1007/s10661-021-09237-1] [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: 01/06/2021] [Accepted: 06/22/2021] [Indexed: 06/13/2023]
Abstract
Potentially toxic elements (PTEs), including cadmium (Cd), copper (Cu), lead (Pb), zinc (Zn), mercury (Hg), and chromium (Cr), in the water-level fluctuation zone (WLFZ) of the Dahuofang Reservoir were surveyed in regard to their concentrations, spatial distributions, risks, and possible sources. Sediment samples were collected at 12 typical sites located in the WLFZ of the Dahuofang Reservoir. The median values of Cd, Cu, Pb, Zn, and Cr all exceeded the soil background values in Liaoning Province. Based on the spatial distributions of these PTEs, the highest enrichment occurred at the R12 site. Cadmium, Cu, and Pb attained the highest contents at R12. The mean geoaccumulation index (Igeo) value of Cd indicated heavy contamination, and that of Pb indicated moderate to heavy contamination, while those of Cu and Zn indicated none to moderate contamination. The negative Igeo values of Cr and Hg indicated the uncontaminated level. According to the potential ecological risk index (RI), Pb posed a moderate risk, while Cd posed a high risk, Zn, Cr, Hg, and Cu posed a low risk. The R12 site exhibited the highest ecological risk. By applying multivariate statistical analysis, two principal components were extracted representing 62.992% of the total variance, and the results showed that the accumulation of Cr, Pb, and Hg might be ascribed to a nearby coal-fired electric power plant. Cadmium, Cu, and Zn were enriched owing to mineral sources, agricultural contamination, and coal combustion.
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Affiliation(s)
- Lingling Ma
- College of Water Resource, Shenyang Agricultural University, Shenyang, 110866, Liaoning, China
- Liaoning Shuangtaihe Estuary Westland Ecosystem Research Station, Nanjingzi Village, Dongguo Town, Panshan County, Panjin city, 124112, Liaoning, China
| | - Tingting Zhang
- College of Water Resource, Shenyang Agricultural University, Shenyang, 110866, Liaoning, China
| | - Qiang Li
- College of Water Resource, Shenyang Agricultural University, Shenyang, 110866, Liaoning, China
| | - Tieliang Wang
- College of Water Resource, Shenyang Agricultural University, Shenyang, 110866, Liaoning, China.
- Liaoning Shuangtaihe Estuary Westland Ecosystem Research Station, Nanjingzi Village, Dongguo Town, Panshan County, Panjin city, 124112, Liaoning, China.
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Spatial Distribution Characteristics and Sources of Nutrients and Heavy Metals in the Xiujiang River of Poyang Lake Basin in the Dry Season. WATER 2021. [DOI: 10.3390/w13121654] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In December of 2019, a total of 114 river water samples were collected from 38 sampling sites in the Xiujiang River of the Poyang Lake Basin for three consecutive days. The temperature (T), pH, dissolved oxygen (DO), chemical oxygen demand (CODCr), five-day biochemical oxygen demand (BOD5), total nitrogen (TN), ammonia nitrogen (NH4+-N), total phosphorus (TP), and concentrations of heavy metals (Cr, Cu, Zn and As) of the samples were measured. The results showed that the average concentrations of heavy metals in the mainstream of the Xiujiang River were Cu > Zn > Cr > As, and those in the main tributary of Xiujiang River (named as the Liaohe tributary) were Zn > Cu > Cr > As, which met the class III of the Environmental Quality Standards for Surface Water in China. However, it was founded that TN and NH4+-N in some agricultural areas had not met the class III standard of surface water. Hierarchical clustering analysis grouped sampling sites into four clusters. Clusters 1, cluster 2, cluster 3, and cluster 4 corresponded to an urban industrial area, rural mountainous area, primitive mountainous area, and agricultural area, respectively. The majority of the sampling sites were classified as mountainous rural areas less impacted by human activities, while the Liaohe tributary were urban industrial areas impacted more by human activities. Principal component analysis and correlation analysis results showed that variation of heavy metals and nutrient elements in Xiujiang River is related to the heterogeneity of human activities, which is mainly affected by urban industrial and agricultural pollution, and natural environments of the river with different background values. The results obtained in the current study will potentially provide a scientific basis for the protection and management of freshwater resources and aquatic ecosystems in the Xiujiang River and Poyang Lake Basin.
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Contamination Features and Source Apportionment of Heavy Metals in the River Sediments around a Lead-Zinc Mine: A Case Study in Danzhai, Guizhou, China. J CHEM-NY 2021. [DOI: 10.1155/2021/9946026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The spatial patterns, ecological risks, and sources of heavy metals (HMs), including Pb, Zn, Mn, Cu, Cd, Hg, and As in river sediments, were identified around a lead-zinc mine of Danzhai, Guizhou, China. The concentrations of selected HMs and their coefficient variations indicated that the river sediments around this typical lead-zinc mine were obviously contaminated with HMs. Anthropogenic activities had further enhanced the accumulation of HMs. The higher contents of the most common selected HMs were mainly distributed in the area close to the lead-zinc mine. Based on the combined evaluations of the single factor pollution index, geo-accumulation index, and potential ecological risk index, it indicated that the ecological risks of Hg, Cd, Zn, and Pb were high or extremely high, and of Mn, Cu, and As were slight or none in the sediments around this lead-zinc mine. It was found that lead-zinc mining and smelting activities, coal mining activities, and agricultural activities (livestock and poultry breeding) are the primary sources of selected HMs, based on the results of correlation analysis together with principal component analysis (PCA) and positive matrix factorization (PMF) model. The pollution of HMs in the river sediments around a lead-zinc mine was predominantly caused by lead-zinc mining and smelting activities. Therefore, for environmental persistence, lead-zinc mining and smelting activities should be given careful consideration and under close surveillance.
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Chen T, Zhao H, Wu K, Zhang Z, Jin Q, Liu S, Li L. Distributional Characteristics and Source Identification of Cadmium in Soils of the Pearl River Delta, China. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 106:75-85. [PMID: 32681240 DOI: 10.1007/s00128-020-02924-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 06/23/2020] [Indexed: 06/11/2023]
Abstract
The results of the Multi-Purpose Geochemical Survey in the Pearl River Delta (PRD) show that the pollution is serious. In this study, the influence of geological genesis, soil-forming process, and human activities on soil quality in PRD is analyzed, and the influence factors, genesis and spatial distributional characteristics of cadmium (Cd) in different soil depths are studied by inverse distance weighted (IDW) and hot spot analysis. The results show that the spatial distribution of Cd is significantly different in PRD and high-value is mainly concentrated in the central cities of Guangzhou-Foshan-Jiangmen-Zhongshan-Zhuhai. Moreover, hot spots with higher Cd content in deep are mainly along Beijiang, Dongjiang, and Pearl River Estuary (PRE). Overall, our findings suggest that the high background value areas formed by marine-land and fluvial sediments as well as intensive human activities that make PRD become an area under the dual restriction of geological genesis and human activities, pollution control cannot be ignored.
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Affiliation(s)
- Tingyong Chen
- School of Land Science and Technology, China University of Geosciences, Beijing, 100083, China
| | - Huafu Zhao
- School of Land Science and Technology, China University of Geosciences, Beijing, 100083, China.
- Key Lab of Land Consolidation, Ministry of Natural Resources of the PRC, Beijing, 100035, China.
| | - Kening Wu
- School of Land Science and Technology, China University of Geosciences, Beijing, 100083, China
- Key Lab of Land Consolidation, Ministry of Natural Resources of the PRC, Beijing, 100035, China
| | - Zhuo Zhang
- School of Land Science and Technology, China University of Geosciences, Beijing, 100083, China
- Key Lab of Land Consolidation, Ministry of Natural Resources of the PRC, Beijing, 100035, China
| | - Qiu Jin
- School of Land Science and Technology, China University of Geosciences, Beijing, 100083, China
| | - Shuang Liu
- School of Land Science and Technology, China University of Geosciences, Beijing, 100083, China
| | - Lihua Li
- School of Land Science and Technology, China University of Geosciences, Beijing, 100083, China
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22
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Data Analysis of Beach Sands’ Chemical Analysis Using Multivariate Statistical Methods and Heavy Metal Distribution Maps: The Case of Moonlight Beach Sands, Kemer, Antalya, Turkey. Symmetry (Basel) 2020. [DOI: 10.3390/sym12091538] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Multivariate statistical methods are widely used in several disciplines of fundamental sciences. In the present study, the data analysis of the chemical analysis of the sands of Moonlight Beach in the Kemer region was examined using multivariate statistical methods. This study consists of three parts. The multivariate statistical analysis tests were described in the first part, then the pollution indexes were studied in the second part. Finally, the distribution maps of the chemical analyses and pollution indexes were generated using the obtained data. The heavy metals were mostly observed in location K1, while they were sorted as follows based on their concentrations: Mg > Fe > Al > Ti > Sr > Mn > Cr > Ni > Zn > Zr > Cu > Rb. Also, strong positive correlations were found between Si, Fe, Al, K, Ti, P. According to the results of factor analysis, it was found that four factors explained 83.5% of the total variance. On the other hand, the coefficient of determination (R2) was calculated as 63.6% in the regression model. Each unit increase in the value of Ti leads to an increase of 0.022 units in the value of Si. Potential Ecological Risk Index analysis results (RI < 150) revealed that the study area had no risk. However, the locations around Moonlight Beach are under risk in terms of Enrichment Factor and Contamination Factor values. The index values of heavy metals in the anomaly maps and their densities were found to be successful; and higher densities were observed based on heavy metal anomalies.
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Zhu G, Noman MA, Narale DD, Feng W, Pujari L, Sun J. Evaluation of ecosystem health and potential human health hazards in the Hangzhou Bay and Qiantang Estuary region through multiple assessment approaches. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 264:114791. [PMID: 32428818 DOI: 10.1016/j.envpol.2020.114791] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 05/05/2020] [Accepted: 05/09/2020] [Indexed: 05/28/2023]
Abstract
Anthropogenic pollution has become a major issue governing ecosystem and human health risks. The Hangzhou Bay and Qiantang Estuary region are facing unusual perturbation due to rapid development along the embayment in recent decades. This study evaluated the organic and inorganic pollutants in water, sediment, and from the muscles of higher trophic organisms (fish, crustacean, shellfish) during four different seasons (in 2018-2019) along the Qiantang Estuary and Hangzhou Bay region to assess the ecosystem health and potential hazard status. Dissolved inorganic phosphate and nitrogen were the major pollutants in this area, which led to severe eutrophication throughout the study period. Eutrophication signals coincided well with the phytoplankton abundance, which revels the control of nutrient enrichment on the spatio-temporal distribution of phytoplankton. Food availability, along with salinity and temperature, drives the zooplankton population distribution. Heavy metals were not the issue of water quality as their concentrations meet the national and international baseline standards. However, in the sediments, Copper (Cu) and Arsenic (As) concentrations were higher than the baseline value. Towards the northwestern part of the Qiantang Estuary, the overall potential risk index of sediment with higher Cadmium (Cd) and Mercury (Hg) depicted delicate condition with moderate risk for the sediment contamination. The As concentration in fishes was close to the baseline standards limit irrespective of low As values within water and sediments. The higher concentrations of Zinc (Zn) and As in shellfish muscles, whereas other metals were within the limit of baseline standard in all the organisms. However, the hazard analysis (Targeted hazard quotient, THQ) values for the seafood consumption to human health indicates the potentially threatening consequences of shellfish and crustacean consumption on human health.
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Affiliation(s)
- Genhai Zhu
- Key Laboratory of Marine Ecosystem Dynamics and Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
| | - Md Abu Noman
- Research Centre for Indian Ocean Ecosystem, Tianjin University of Science and Technology, Tianjin, 300457, China; Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Dhiraj Dhondiram Narale
- Research Centre for Indian Ocean Ecosystem, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Weihua Feng
- Key Laboratory of Marine Ecosystem Dynamics and Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
| | - Laxman Pujari
- Research Centre for Indian Ocean Ecosystem, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Jun Sun
- Research Centre for Indian Ocean Ecosystem, Tianjin University of Science and Technology, Tianjin, 300457, China; Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin University of Science and Technology, Tianjin, 300457, PR China.
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Wu H, Yang F, Li H, Li Q, Zhang F, Ba Y, Cui L, Sun L, Lv T, Wang N, Zhu J. Heavy metal pollution and health risk assessment of agricultural soil near a smelter in an industrial city in China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2020; 30:174-186. [PMID: 30810352 DOI: 10.1080/09603123.2019.1584666] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 02/15/2019] [Indexed: 06/09/2023]
Abstract
To assess heavy metal pollution and human health risk, a total of 28 topsoil samples were collected during four seasons from seven agricultural soil sites near a famous smelter in Jiyuan, China. The maximum concentrations of Cd, Pb, Hg, As, Zn, Cu, Ni, and Cr were 26.00, 2601.00, 3.29, 65.00, 410.00, 156.30, 54.80, and 73.60 mg kg-1, respectively. Compared with the sampling site nearest to the smelter, the concentrations of six metals at the farthest site were decreased significantly (P < 0.05). All sites were heavily contaminated, with Nemerow index (P) >3.0, and all sites had very high ecological risks related to Cd and Hg. The non-carcinogenic risk for children (based on combined exposure to the eight metals) was above the safety level. The carcinogenic risk of As for adults (8.98 × 10-6) and children (1.49 × 10-5) exceeded the acceptable level (1 × 10-6). Results suggest a serious health risk in the polluted areas, particularly for children.Abbreviation Cd: Cadmium; Pb: Lead; Hg: Mercury; As: Arsenic; Zn: Zinc; Cu: Copper; Ni: Nickel; Cr: Chromium; P: Nemerow index; RI: Potential ecological risk index; Ei: Monomial potential ecological risk of a specific heavy metal; HI: non-carcinogenic hazard index; CR: Carcinogenic risk; TN: Total nitrogen; TP: Total phosphorus; OM: Organic matter; MC: Moisture content; ADD: Average daily dose.
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Affiliation(s)
- Huiying Wu
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Fan Yang
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Hongping Li
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Qingbo Li
- Zhejiang Biosan Biochemical Technologies Co. Ltd., Hangzhou, Zhejiang, China
| | - Fengli Zhang
- Luoyang Orthopedic Hospital of Henan Province, Luoyang, Henan, China
| | - Yue Ba
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Liuxin Cui
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Lianglong Sun
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Tianchen Lv
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Na Wang
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Jingyuan Zhu
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
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A Spatiotemporal Analysis of the Effects of Urbanization’s Socio-Economic Factors on Landscape Patterns Considering Operational Scales. SUSTAINABILITY 2020. [DOI: 10.3390/su12062543] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Landscape patterns are significantly affected during the urbanization process. Identifying the spatiotemporal impacts of urbanization’s socio-economic factors on landscape patterns is very important and can provide scientific evidence to support urban ecological management and guide managers to establish appropriate sustainability policies. This article applies multiscale geographically weighted regression (MGWR) to reveal the relationships between landscape patterns and the socio-economic factors of urbanization in Shenzhen, China, from 2000 to 2015, in five-year intervals. MGWR is a powerful extension of geographically weighted regression (GWR) that can not only reveal spatial heterogeneity patterns but also measure the operational scale of covariates. The empirical results indicate that MGWR is superior to GWR. Furthermore, the changes in operational scale represented by the spatial bandwidth of MGWR in different years reflect temporal changes in the spatial relationships of given factors, which is significant information for urban studies. These multiscale relationships between landscape patterns and the socio-economic factors of urbanization, revealed via MGWR, are useful for strategic planning around urban dynamic development and land resource and ecological landscape management. The results can provide additional insight into landscape and urbanization studies from a multiscale perspective, which is important for local, regional, and global urban planning.
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26
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Zhang Y, Ruckelshaus M, Arkema KK, Han B, Lu F, Zheng H, Ouyang Z. Synthetic vulnerability assessment to inform climate-change adaptation along an urbanized coast of Shenzhen, China. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 255:109915. [PMID: 31783212 DOI: 10.1016/j.jenvman.2019.109915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 11/18/2019] [Accepted: 11/22/2019] [Indexed: 06/10/2023]
Abstract
Coastal zones are increasingly threatened by stressors from both climate change and human activities. Vulnerability assessment is central to the implementation of interventions for adapting climate change. However, synthetic vulnerability based on an integrative analysis of ecosystem service and socioeconomic characteristics in urban coastal zones with tightly coupled human-nature interactions is not fully understood. Based on the Coastal Vulnerability model of the InVEST (Integrated Valuation of Environmental Services and Tradeoffs) tool, a holistic framework for assessing coastal vulnerability to multiple hazards (sea level rise, waves and storm surge) was developed by integrating ecological, physical and socioeconomic factors into a single spatial representation and applied to the coast of Shenzhen, China. Based on the levels of biophysical exposure, sensitivity and adaptive capacity of coastal communities, a three-dimensional decision matrix was proposed for planning location-specific interventions. Results show that approximately 15% of the coastline were categorized as having high vulnerability. Spatial vulnerability heterogeneity was found within and across the coastal districts, with Yantian grouped into the most vulnerable district. The biophysical exposure has greater influences on the overall vulnerability than either sensitivity or adaptive capacity. This study highlights the significance of complex interactions between natural ecosystems and socioeconomic conditions in driving vulnerability and suggests that combined natural-based defenses and socioeconomic factors contribute to lower vulnerability. The results can help decision-makers prioritize coastal zones for interventions and identifying adaptive strategies that target drivers of vulnerability.
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Affiliation(s)
- Yan Zhang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Mary Ruckelshaus
- The Natural Capital Project, Stanford University, Stanford, CA, 94305-5020, USA; School of Environmental and Forest Sciences, University of Washington, Seattle, WA, 98195, USA
| | - Katie K Arkema
- The Natural Capital Project, Stanford University, Stanford, CA, 94305-5020, USA; School of Environmental and Forest Sciences, University of Washington, Seattle, WA, 98195, USA
| | - Baolong Han
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Fei Lu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Hua Zheng
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Zhiyun Ouyang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
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Xiao H, Shahab A, Li J, Xi B, Sun X, He H, Yu G. Distribution, ecological risk assessment and source identification of heavy metals in surface sediments of Huixian karst wetland, China. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 185:109700. [PMID: 31557569 DOI: 10.1016/j.ecoenv.2019.109700] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 09/18/2019] [Accepted: 09/19/2019] [Indexed: 06/10/2023]
Abstract
In this study, heavy metals including Cd, Pb, Zn, Mn, Cu, Ni, Cr, As, and Hg, in the surface sediment (0-10 cm) of the Huixian wetland in a karst region were investigated in terms of their spatial distribution, ecological risks, and possible sources. Samples were collected from 13 typical sites throughout the Huixian wetland and were analyzed via inductively coupled plasma-mass spectrometry. The results revealed that the mean concentrations of Cd, Pb, Mn, Cr, As, and Hg were higher than the background and Chinese safe standard values. Based on spatial distribution and ecological risk, the study area was differentiated into three groups of sites with the following order of risk: group 3 > group 2 > group 1. The observed concentrations fluctuated slightly with depth. However, an irregular decreasing trend in the concentration with soil depth was observed among the groups. Multivariate statistical analyses showed that the high accumulation of Cd, Pb, Zn and Cu in the sediments of group 3 sites is due to the natural ancient deposition of minerals rich in heavy metals, while the accumulation of Mn, Cr, As, and Hg is attributed to an anthropogenic origin. Agricultural activities, the use of fertilizers and, pesticides, and local automobile repair stations most probably enriched these heavy metals in the Huixian wetland sediments. Hg and Cd have the highest potential ecological risk, which follows the order Hg > Cd > Pb > As > Ni > Cu > Cr > Mn > Zn. The mean geoaccumulation index (Igeo) values of Pb (0.48) and Hg (1.12) suggested moderate contamination in the study area.
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Affiliation(s)
- He Xiao
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, PR China; The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin University of Technology, Guilin, 541004, PR China
| | - Asfandyar Shahab
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, PR China.
| | - Jieyue Li
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, PR China; The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin University of Technology, Guilin, 541004, PR China
| | - Beidou Xi
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, PR China; Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, PR China
| | - Xiaojie Sun
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, PR China
| | - Huijun He
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, PR China
| | - Guo Yu
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541004, PR China; The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin University of Technology, Guilin, 541004, PR China
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28
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Chen Y, Wang L, Liang T, Xiao J, Li J, Wei H, Dong L. Major ion and dissolved heavy metal geochemistry, distribution, and relationship in the overlying water of Dongting Lake, China. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2019; 41:1091-1104. [PMID: 30284697 DOI: 10.1007/s10653-018-0204-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Accepted: 09/29/2018] [Indexed: 06/08/2023]
Abstract
Deteriorating lake water quality has become a serious environmental issue around the globe. Heavy metals dissolved in the overlying water of lakes are notably more toxic than those found in lake sediment. Given this, we sought to better understand the characteristics of particular major ion and dissolved heavy metal in Dongting Lake-the second largest freshwater lake in China. Overlying water samples were collected from Dongting Lake to investigate the major ion geochemistry and to examine the relationship between the major ions and dissolved heavy metals. Chemical analysis of the overlying water showed that the average cation concentration was the highest for Ca2+, followed by Mg2+, Na+, and K+. Similarly, the highest anion concentration was SO42-, followed by Cl-, NO3-, and HCO3-. Total dissolved solids in the overlying water of Dongting Lake ranged from 66.19 to 159.20 mg/L, with an average value of 93.13 mg/L. The predominant hydrochemical type was Ca-SO4. The mean concentrations of dissolved heavy metal in both surface and deep waters decreased in the following order: Zn > Cr > Ni > Cu > Pb > Cd. Importantly, all of the selected heavy metals tested in the overlying water were lower than the corresponding toxicity reference values. Co-occurrence network analyses were performed and compared the correlations between all measured major ions and heavy metals. Results of the subsequent principal component analyses revealed that heavy metal levels in the aquatic environment primarily originated from natural processes and were enhanced by anthropogenic activities.
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Affiliation(s)
- Yan Chen
- Department of Water Environmental Planning, Chinese Academy for Environmental Planning, Beijing, 100012, China
| | - Lingqing Wang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Tao Liang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Jun Xiao
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
| | - Jing Li
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Haicheng Wei
- Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes, Qinghai Institute of Salt Lake, Chinese Academy of Sciences, Xining, 810008, China
| | - Linlin Dong
- Suzhou Academy of Agricultural Sciences, Suzhou, 215155, China
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Liu Q, Jia Z, Li S, Hu J. Assessment of heavy metal pollution, distribution and quantitative source apportionment in surface sediments along a partially mixed estuary (Modaomen, China). CHEMOSPHERE 2019; 225:829-838. [PMID: 30904763 DOI: 10.1016/j.chemosphere.2019.03.063] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 02/27/2019] [Accepted: 03/10/2019] [Indexed: 06/09/2023]
Abstract
The aim of this study is to investigate the distribution, ecological risk and quantitative source apportionment of seven heavy metals in surface sediments along a partially mixed estuary (Modaomen, China). The study area was divided into three regions based on salt-freshwater mixing: a tidal river channel, weakly mixed zone and strongly mixed zone. The concentrations of Cu, Zn, Pb, Cd, Cr and Ni were significantly higher in the weakly mixed zone, while a higher Co content was found in the tidal river channel. From enrichment factor (EF) analyses, Cd was moderate to extreme severely enriched at most stations, and other heavy metals were minor enrichments. Adverse effects on aquatic biota may occur occasionally for all seven heavy metals based on the sediment quality guidelines (SQGs). The correlations between Al and heavy metals suggested that metals in sediments were mainly attributed to anthropogenic sources. Then Positive matrix factorization (PMF) and Geostatistic method were used to quantify the heavy metal sources and determine impacted regions. A mixed source from the inner Lingding Bay and West River contributed approximately 50% of the Cu, Zn, Pb, Cr and Ni. The electroplating industry accounted for about 57% of the Cd content, and the major contaminated area was concentrated at the confluence of the West River and its tributaries. The alloy industry contributed approximately 65% of the Co, most of which was near an industrial park.
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Affiliation(s)
- Qiuxin Liu
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Zhenzhen Jia
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Shiyu Li
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, 510275, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, 510275, China.
| | - Jiatang Hu
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, 510275, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, 510275, China; Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai, 519000, China.
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Gao B, Gao L, Xu D, Zhang M, Qu X, Li Y. A novel method for evaluating the potential release of trace metals associated with rainfall leaching/runoff from urban soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 664:37-44. [PMID: 30743129 DOI: 10.1016/j.scitotenv.2019.01.418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 01/14/2019] [Accepted: 01/17/2019] [Indexed: 06/09/2023]
Abstract
The release of pollutants in soils owing to rainfall is a major challenge related to urbanization. Here, urban soils from different functional zones were collected to evaluate the release risk and estimate their annual release amounts of trace metals (Co and Ni) using multiple techniques, including diffusive gradients in thin-films (DGT), DGT-induced fluxes in sediments (DIFS) model, and Fourier-transform infrared (FTIR) spectroscopy. The results indicate that the average concentration of Co (6.55 mg kg-1) was slightly lower than that of the local soil background, whereas for Ni, the trend was reversed. Risk assessments based on total concentrations show that the soil samples were uncontaminated with Co while uncontaminated to moderately contaminated with Ni. However, the mobility coefficients indicate that Co posed low to medium risk, while Ni posed low risk. Hence, further investigation of DGT measurements and DIFS model show that the DGT-measured Co and Ni concentrations were lower than the corresponding concentrations in solution, leading to low R values and the partial resupply of Co and Ni from the solid phase. The FTIR spectra and elemental analysis suggest that because of the electrostatic attraction and complexation of the hydrosilicate minerals and organic matters, the metal resupply was restrained, resulting in them being only a partial resupply. Moreover, the mobility of Co was mainly controlled by the resupply ability, response time, and desorption rate; while for Ni, the particle concentration and porosity played important roles in determining mobility. In addition, the release amounts of the trace metals were quantified using the binary mixing equation. The estimated annual release amounts of Co and Ni in Pingshan District were 0.44-3.54 t and 1.93-16.47 t, respectively. This study provides an effective in-situ method for estimating the release amounts of trace metals in soils during rainfall combining DGT and DIFS model.
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Affiliation(s)
- Bo Gao
- State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China; Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China.
| | - Li Gao
- Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
| | - Dongyu Xu
- Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
| | - Min Zhang
- Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
| | - Xiaodong Qu
- State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China; Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
| | - Yanyan Li
- Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
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Concentrations, Distribution, and Ecological Risk Assessment of Heavy Metals in Daya Bay, China. WATER 2018. [DOI: 10.3390/w10060780] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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