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Islam ARMT, Hasan M, Sadia MR, Mubin AN, Ali MM, Senapathi V, Idris AM, Malafaia G. Unveiling microplastics pollution in a subtropical rural recreational lake: A novel insight. ENVIRONMENTAL RESEARCH 2024; 250:118543. [PMID: 38417661 DOI: 10.1016/j.envres.2024.118543] [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: 02/01/2024] [Accepted: 02/22/2024] [Indexed: 03/01/2024]
Abstract
While global attention has been primarily focused on the occurrence and persistence of microplastics (MP) in urban lakes, relatively little attention has been paid to the problem of MP pollution in rural recreational lakes. This pioneering study aims to shed light on MP size, composition, abundance, spatial distribution, and contributing factors in a rural recreational lake, 'Nikli Lake' in Kishoreganj, Bangladesh. Using density separation, MPs were extracted from 30 water and 30 sediment samples taken from ten different locations in the lake. Subsequent characterization was carried out using a combination of techniques, including a stereomicroscope, Fourier transform infrared spectroscopy (FTIR) and field emission scanning electron microscopy (FE-SEM). The results showed a significant prevalence of MPs in all samples, with an average amount of 109.667 ± 10.892 pieces/kg3 (dw) in the sediment and 98.167 ± 12.849 pieces/m3 in the water. Small MPs (<0.5 mm), fragments and transparent colored particles formed the majority, accounting for 80.2%, 64.5% and 55.3% in water and 78.9%, 66.4% and 64.3% in sediment, respectively. In line with global trends, polypropylene (PP) (53%) and polyethylene (PE) (43%) emerged as the predominant polymers within the MPs. MP contents in water and sediment showed positive correlations with outflow, while they correlated negatively with inflow and lake depth (p > 0.05). Local activities such as the discharge of domestic sewage, fishing waste and agricultural runoff significantly influence the distribution of polypropylene. Assessment of pollution factor, pollution risk index and pollution load index values at the sampling sites confirmed the presence of MPs, with values above 1. This study is a baseline database that provides a comprehensive understanding of MP pollution in the freshwater ecosystem of Bangladesh, particularly in a rural recreational lake. A crucial next step is to explore ecotoxicological mechanisms, legislative measures and future research challenges triggered by MP pollution.
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Affiliation(s)
- Abu Reza Md Towfiqul Islam
- Department of Disaster Management, Begum Rokeya University, Rangpur 5400, Bangladesh; Department of Development Studies, Daffodil International University, Dhaka, 1216, Bangladesh.
| | - Mehedi Hasan
- Department of Disaster Management, Begum Rokeya University, Rangpur 5400, Bangladesh.
| | - Moriom Rahman Sadia
- Department of Disaster Management, Begum Rokeya University, Rangpur 5400, Bangladesh.
| | - Al-Nure Mubin
- Department of Disaster Management, Begum Rokeya University, Rangpur 5400, Bangladesh.
| | - Mir Mohammad Ali
- Department of Aquaculture, Sher - e - Bangla Agricultural University, Dhaka 1207, 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, Saudi Arabia.
| | - Guilherme Malafaia
- Post-Graduation Program in Conservation of Cerrado Natural Resources, Goiano Federal Institute, Urutaí, GO, Brazil; Post-Graduation Program in Ecology, Conservation, and Biodiversity, Federal University of Uberlândia, Uberlândia, MG, Brazil; Post-Graduation Program in Biotechnology and Biodiversity, Federal University of Goiás, Goiânia, GO, Brazil.
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Wan S, Xu G, Xiong P, Qiao H, Chen X, Gu L, Xiong H, Wang B, Gu F. Microplastic pollution characteristics and ecological risk assessment in the Wuding River Basin, China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024:124228. [PMID: 38801879 DOI: 10.1016/j.envpol.2024.124228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 05/18/2024] [Accepted: 05/24/2024] [Indexed: 05/29/2024]
Abstract
Microplastics (MPs), as a new type of environmental pollutant, have attracted extensive attention in recent years. However, there has been relatively little research specifically focusing on MPs in the Yellow River Basin, China, particularly regarding MP migration patterns. Based on surface water and sediment samples from 19 sampling sites in the Wuding River (WDR), the abundances and characteristic distributions of MPs were analyzed, and the environmental factors affecting their distribution and potential ecological risks were evaluated. The results showed that the MP abundances in surface water and sediments of the WDR were significantly different (P <0.05), with mean values of 2.98 ± 0.69 items/L and 419.47 ± 75.61 items/kg, respectively. In terms of MP characteristics, the most common size class was 0.1-0.5 mm in surface water. Polyethylene (PE, 32.50%) and polypropylene (PP, 27.50%) were the main polymer types of MPs in surface water. Although similar MP characteristics were observed in sediments, there were significantly more particles in the <0.1 mm particle size (P <0.05), which was 15.0% higher than in surface water. Also, more high-density MP fragments were observed in sediment samples. The retention of MPs in sediments was influenced by the MP characteristics (density, shape, particle size) and sediment particle size. In contrast, the MP abundance in surface water was more closely related to the presence of other environmental pollutants, such as total phosphorus (WTP) and ammonia nitrogen (WAN). Temperature (T), agricultural land (AGR), and residential land (RES) only had significant effects on the distribution of MPs in surface water (P <0.05). Potential ecological risk assessments revealed that MP pollution in sediments was more serious than in surface water, especially in the middle and lower reaches. The results of this study are important for understanding MP transport in a sandy river and for eliminating potential sources of MPs.
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Affiliation(s)
- Shun Wan
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi' an 710048, Shaanxi, China
| | - Guoce Xu
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi' an 710048, Shaanxi, China.
| | - Ping Xiong
- Shaanxi Forestry Survey and Planning Institute, Xi'an 710082, Shaanxi, China
| | - Hailiang Qiao
- Shaanxi Forestry Survey and Planning Institute, Xi'an 710082, Shaanxi, China
| | - Xin Chen
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi' an 710048, Shaanxi, China
| | - Liuyang Gu
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi' an 710048, Shaanxi, China
| | - Haijing Xiong
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi' an 710048, Shaanxi, China
| | - Bin Wang
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi' an 710048, Shaanxi, China
| | - Fengyou Gu
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi' an 710048, Shaanxi, China
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Geng L, Yang L, Liu T, Zhang S, Sun X, Wang W, Pan H, Yan L. Higher diversity of sulfur-oxidizing bacteria based on soxB gene sequencing in surface water than in spring in Wudalianchi volcanic group, NE China. Int Microbiol 2024:10.1007/s10123-024-00526-6. [PMID: 38740654 DOI: 10.1007/s10123-024-00526-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 04/26/2024] [Accepted: 05/03/2024] [Indexed: 05/16/2024]
Abstract
INTRODUCTION Sulfur-oxidizing bacteria (SOB) play a key role in the biogeochemical cycling of sulfur. OBJECTIVES To explore SOB diversity, distribution, and physicochemical drivers in five volcanic lakes and two springs in the Wudalianchi volcanic field, China. METHODS This study analyzed microbial communities in samples via high-throughput sequencing of the soxB gene. Physical-chemical parameters were measured, and QIIME 2 (v2019.4), R, Vsearch, MEGA7, and Mothur processed the data. Alpha diversity indices and UPGMA clustering assessed community differences, while heat maps visualized intra-sample variations. Canoco 5.0 analyzed community-environment correlations, and NMDS, Adonis, and PcoA explored sample dissimilarities and environmental factor correlations. SPSS v.18.0 tested for statistical significance. RESULTS The diversity of SOB in surface water was higher than in springs (more than 7.27 times). We detected SOB affiliated to β-proteobacteria (72.3 %), α-proteobacteria (22.8 %), and γ-proteobacteria (4.2 %) distributed widely in these lakes and springs. Rhodoferax and Cupriavidus were most frequent in all water samples, while Rhodoferax and Bradyrhizobium are dominant in surface waters but rare in springs. SOB genera in both habitats were positively correlated. Co-occurrence analysis identified Bradyrhizobium, Blastochloris, Methylibium, and Metyhlobacterium as potential keystone taxa. Redundancy analysis (RDA) revealed positive correlations between SOB diversity and total carbon (TC), Fe2+, and total nitrogen (TN) in all water samples. CONCLUSION The diversity and community structure of SOB in volcanic lakes and springs in the Wudalianchi volcanic group were clarified. Moreover, the diversity and abundance of SOB decreased with the variation of water openness, from open lakes to semi-enclosed lakes and enclosed lakes.
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Affiliation(s)
- Lirong Geng
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang, China
| | - Lei Yang
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang, China
| | - Tao Liu
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang, China
| | - Shuang Zhang
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang, China
| | - Xindi Sun
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang, China
| | - Weidong Wang
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang, China
- Key Laboratory of Low‑carbon Green Agriculture in Northeastern China, Ministry of Agriculture and Rural Affairs P. R. China, Heilongjiang Bayi Agricultural University, Daqing, 163319, China
| | - Hong Pan
- Institute of Natural Resources and Ecology, Heilongjiang Academy of Science, Harbin, 150090, Heilongjiang, China
| | - Lei Yan
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang, China.
- Key Laboratory of Low‑carbon Green Agriculture in Northeastern China, Ministry of Agriculture and Rural Affairs P. R. China, Heilongjiang Bayi Agricultural University, Daqing, 163319, China.
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Jahan I, Chowdhury G, Baquero AO, Couetard N, Hossain MA, Mian S, Iqbal MM. Microplastics pollution in the Surma River, Bangladesh: A rising hazard to upstream water quality and aquatic life. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 360:121117. [PMID: 38733848 DOI: 10.1016/j.jenvman.2024.121117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/11/2024] [Accepted: 05/06/2024] [Indexed: 05/13/2024]
Abstract
The ecological health of freshwater rivers is deteriorating globally due to careless human activities, for instance, the emission of plastic garbage into the river. The current research was the first assessment of microplastics (MPs) pollution in water, sediment, and representative organisms (fish, crustacean, and bivalve) from the Surma River. Water, sediment, and organisms were sampled from six river sites (Site 1: Charkhai; Site 2: Golapganj; Site 3: Alampur; Site 4: Kazir Bazar; Site 5: Kanishail and Site 6: Lamakazi), and major water quality parameters were recorded during sampling. Thereafter, MPs in water, sediment, and organism samples were extracted, and then microscopically examined to categorize selected MPs types. The abundance of MPs, as well as size, and color distribution, were estimated. Polymer types were analyzed by ATR-FTIR, the color loss of MPs was recorded, the Pollution Load Index (PLI) was calculated, and the relationship between MPs and water quality parameters was analyzed. Sites 4 and 5 had comparatively poorer water quality than other sites. Microplastic fibers, fragments, and microbeads were consistently observed in water, sediment, and organisms. A substantial range of MPs in water, sediment, and organisms (37.33-686.67 items/L, 0.89-15.12 items/g, and 0.66-48.93 items/g, respectively) was recorded. There was a diverse color range, and MPs of <200 μm were prevalent in sampling areas. Six polymer types were identified by ATR-FTIR, namely Polyethylene (PE), Polyamide (PA), Polypropylene (PP), Cellulose acetate (CA), Polyethylene terephthalate (PET), and Polystyrene (PS), where PE (41%) was recognized as highly abundant. The highest PLI was documented in Site 4 followed by Site 5 both in water and sediment. Likewise, Sites 4 and 5 were substantially different from other study areas according to PCA. Overall, the pervasiveness of MPs was evident in the Surma River, which requires further attention and prompt actions.
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Affiliation(s)
- Israt Jahan
- Laboratory of Aquatic Biodiversity and Ecophysiology, Department of Fish Biology and Genetics, Sylhet Agricultural University, Sylhet-3100, Bangladesh
| | - Gourab Chowdhury
- Laboratory of Aquatic Biodiversity and Ecophysiology, Department of Fish Biology and Genetics, Sylhet Agricultural University, Sylhet-3100, Bangladesh; School of Science, Technology and Engineering, University of the Sunshine Coast, QLD 4556, Australia; Centre for Bioinnovation, University of the Sunshine Coast, Sunshine Coast, QLD 4556, Australia
| | - Andrea Osorio Baquero
- College of Life and Environmental Sciences: Biosciences, Geoffrey Pope Building, University of Exeter, Stocker Road, Exeter EX4 4QD, United Kingdom
| | - Nicolas Couetard
- Plastic@Sea, Observatoire Océanologique de Banyuls, 66650 Banyuls-sur-mer, France
| | - Mohammad Amzad Hossain
- Laboratory of Aquatic Biodiversity and Ecophysiology, Department of Fish Biology and Genetics, Sylhet Agricultural University, Sylhet-3100, Bangladesh; Coastal Marine Ecosystems Research Centre (CMERC), Central Queensland University, QLD 4680, Australia; School of Health, Medical and Applied Sciences, Central Queensland University, North Rockhampton QLD 4701, Australia.
| | - Sohel Mian
- Laboratory of Aquatic Biodiversity and Ecophysiology, Department of Fish Biology and Genetics, Sylhet Agricultural University, Sylhet-3100, Bangladesh
| | - Mohammed Mahbub Iqbal
- Laboratory of Aquatic Biodiversity and Ecophysiology, Department of Fish Biology and Genetics, Sylhet Agricultural University, Sylhet-3100, Bangladesh
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Nejat N, Sattari M, Mohsenpour R, Shi X, Rasta M. Microplastics abundance, distribution and composition in surface waters, sediments and fish species from Amir-Kalayeh Wetland, Northern Iran. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:22024-22037. [PMID: 38400964 DOI: 10.1007/s11356-024-32627-0] [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: 10/17/2023] [Accepted: 02/20/2024] [Indexed: 02/26/2024]
Abstract
Microplastics (MPs) pollution is considered as a globally pervasive threat to aquatic ecosystems and many studies reported this pollution in different aquatic ecosystems. However, studies on MPs pollution in wetlands are still scarce. Therefore, the aim of present study was to investigate the presence of MPs in the surface water, sediment and different fish species of Amir-Kalayeh wetland, Northern Ian. Surface water and sediment samples were collected from six stations during June to July 2022. Moreover, the gills and gastrointestinal tract (GIT) of 54 fish specimens belonging to four species including Cyprinus carpio, Tinca tinca, Esox lucius and Silurus glanis were analysed. MPs were detected in all samples with an average of 2.15 ± 1.98 items/m3 for surface water, 51.66 ± 32.20 items/kg dry weight for sediments, 0.17 ± 0.17 items/individual for fish GIT and 0.12 ± 0.12 items/individual for fish gills. There was no significant relationship between MPs abundance in surface waters and sediments as well as between MPs abundance in environmental matrices and fish (P > 0.0.5). In terms of feeding habit, no significant differences were observed between the number of MPs found in omnivorous and carnivorous fish species (P > 0.05). Moreover, no significant relationship was detected between the MPs abundance in fish tissues and body size (P > 0.05). MPs were mainly fibers, mostly transparent, and in a range size of 70-5000 µm. The dominant MPs type was nylon in all samples. This study will help increase our knowledge about MPs pollution in inland freshwater systems and suggests that management policies take essential steps to reduce this insidious problem in freshwater ecosystems.
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Affiliation(s)
- Narges Nejat
- Department of Fisheries, Faculty of Natural Resources, University of Guilan, Sowmehsara, Iran
| | - Masoud Sattari
- Department of Fisheries, Faculty of Natural Resources, University of Guilan, Sowmehsara, Iran
- Department of Marine Biology, The Caspian Sea Research Center, University of Guilan, Rasht, Iran
| | - Reza Mohsenpour
- Department of Fisheries, Faculty of Natural Resources, University of Guilan, Sowmehsara, Iran
| | - Xiaotao Shi
- College of Hydraulic and Environmental Engineering, Chine Three Gorges University, Yichang, 443002, Hubei, China
- Hubei International Science and Technology Cooperation Base of Fish Passage, Three Gorges University, Yichang, 443002, Hubei, China
| | - Majid Rasta
- College of Hydraulic and Environmental Engineering, Chine Three Gorges University, Yichang, 443002, Hubei, China.
- Hubei International Science and Technology Cooperation Base of Fish Passage, Three Gorges University, Yichang, 443002, Hubei, China.
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Kaushik A, Gupta P, Kumar A, Saha M, Varghese E, Shukla G, Suresh K, Gunthe SS. Identification and physico-chemical characterization of microplastics in marine aerosols over the northeast Arabian Sea. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168705. [PMID: 38000750 DOI: 10.1016/j.scitotenv.2023.168705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 11/15/2023] [Accepted: 11/17/2023] [Indexed: 11/26/2023]
Abstract
Microplastics (MPs) in the atmosphere can undergo long-range transport from emission regions to pristine terrestrial and oceanic ecosystems. Due to their inherent toxic and hazardous characteristics, MPs pose serious risks to both human well-being and the equilibrium of ecosystem. The present study outlines the comprehensive characterization, spanning physical and chemical attributes of MPs associated with atmospheric aerosols. Total suspended particulates (TSPs) were collected on a quartz fibre filter by operating a high-volume sampler for 24 h during distinct years (March, 2016 and November, 2020) at a coastal location in the northeast Arabian Sea. Subsequent to the sampling, a series of techniques were applied including density separation. The assessment and scrutiny of the MPs was carried out using stereo-zoom microscopy with supplementary validation using advanced fluorescence microscopy for enhanced precision in identification. Our comparative assessment suggests peroxide treatment followed by density separation could be a robust procedure for the definitive identification and characterization of MPs in the atmosphere. Average total abundance of MPs was found to be 1.30 ± 0.14 n/m3 in 2016 and 1.46 ± 0.12 n/m3 in 2020 with fibres, fragments and films having similar relative contributions (41 %, 31 %, 28 % in 2016 and 40 %, 35 %, 25 % in 2020). Fibres were found to be dominant morphotype followed by fragments and films over the coastal region of the Arabian Sea. In order to unravel the detailed chemical nature of these MPs, spectral analysis using μ-FTIR was carried out. The outcome of the analysis showed prevailing polymers as polyvinyl chloride and polymethyl methacrylate (50545 %) as dominant polymers followed by polyester (15 %), styrene butyl methacrylate (11 %), and polyacetal (9 %). MPs present in the vicinity of the Arabian Sea have potential to supply nutrients and toxicants, consequently can contribute to the modulation of the surface water biogeochemical processes.
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Affiliation(s)
- Ankush Kaushik
- CSIR-National Institute of Oceanography, Dona Paula 403004, Goa, India
| | - Priyansha Gupta
- CSIR-National Institute of Oceanography, Dona Paula 403004, Goa, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ashwini Kumar
- CSIR-National Institute of Oceanography, Dona Paula 403004, Goa, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
| | - Mahua Saha
- CSIR-National Institute of Oceanography, Dona Paula 403004, Goa, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Emil Varghese
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India; Centre for Atmospheric and Climate Sciences, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Garima Shukla
- CSIR-National Institute of Oceanography, Dona Paula 403004, Goa, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - K Suresh
- CSIR-National Institute of Oceanography, Dona Paula 403004, Goa, India; Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, India
| | - Sachin S Gunthe
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India; Centre for Atmospheric and Climate Sciences, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
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Banik P, Anisuzzaman M, Bhattacharjee S, Marshall DJ, Yu J, Nur AAU, Jolly YN, Mamun MA, Paray BA, Bappy MMM, Bhuiyan T, Hossain MB. Quantification, characterization and risk assessment of microplastics from five major estuaries along the northern Bay of Bengal coast. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 342:123036. [PMID: 38030111 DOI: 10.1016/j.envpol.2023.123036] [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: 08/04/2023] [Revised: 11/04/2023] [Accepted: 11/22/2023] [Indexed: 12/01/2023]
Abstract
Microplastics (MPs) as hazardous contaminants has drawn the rapid attention of the general public due to their omnipresence and adverse impacts on ecosystems and human health. Despite this, understanding of MPs contamination levels in the estuarine ecosystems along the Bay of Bengal coast remains very limited. This research focused on the presence, spatial distribution, morpho-chemical characteristics and ecological implications of MPs in water and sediment from five key estuaries (Meghna, Karnaphuli, Matamuhuri, Bakkhali, and Naf rivers) within the Bengal delta. Out of the five estuaries, the Meghna exhibited the least amount of MPs in both surface water (150.00 ± 65.62 items/m3) and sediment (30.56 ± 9.34 items/kg). In contrast, the highest occurrence of MPs was recorded in Karnaphuli river water (350.00 ± 69.22 items/m3) and Matamuhuri river sediment (118.33 ± 26.81 items/kg). ANOVA indicated a statistically significant distinction (p < 0.01) among the examined estuaries. Most identified MPs were fibers and < 0.5 mm in size in both water and sediment samples. Transparent MPs were dominant in both water (42.28%) and sediment (45.22%). Besides violet, red, blue, pink and green colored MPs were also observed. Various polymer types, including PE, PP, PET, PS, Nylon, EVA, and ABS, were detected, with PE being the dominant one. Based on the polymer risk index (PHI), the estuaries were classified as hazard level V, signifying a severe level of MP contamination. However, the potential ecological hazardous index (PHI), potential ecological risk index (RI), and pollution load index (PLI) indicated moderate pollution levels. This study offers initial insights into the pollution caused by MPs in major estuaries of Bengal delta, which policymakers can utilize to implement suitable management strategies.
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Affiliation(s)
- Partho Banik
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Sonapur, 3814, Bangladesh
| | - Md Anisuzzaman
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Sonapur, 3814, Bangladesh
| | - Shovon Bhattacharjee
- Biosecurity Program, Kirby Institute, University of New South Wales, Sydney, NSW, 2052, Australia; Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - David J Marshall
- Environmental and Life Sciences Programme, Faculty of Science, University Brunei Darussalam, Jala Tungku Link, Gadong, BE, 1410, Brunei Darussalam
| | - Jimmy Yu
- School of Engineering and Built Environment, Griffith University, Nathan, QLD, 4111, Australia
| | - As-Ad Ujjaman Nur
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Sonapur, 3814, Bangladesh
| | - Yeasmin N Jolly
- Atmospheric and Environmental Chemistry Laboratory, Chemistry Division, Atomic Energy Centre, Dhaka, 1000, Bangladesh
| | - Md Al- Mamun
- Materials Science Division, Atomic Energy Centre Dhaka, 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
| | - Md Maheen Mahmud Bappy
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Sonapur, 3814, Bangladesh
| | - Tabarok Bhuiyan
- Department of Oceanography, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - 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, Nathan, QLD, 4111, Australia.
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8
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Saad D, Ramaremisa G, Ndlovu M, Chauke P, Nikiema J, Chimuka L. Microplastic Abundance and Sources in Surface Water Samples of the Vaal River, South Africa. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2024; 112:23. [PMID: 38180521 PMCID: PMC10769928 DOI: 10.1007/s00128-023-03845-y] [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: 10/27/2023] [Accepted: 12/06/2023] [Indexed: 01/06/2024]
Abstract
Microplastics (MPs) have emerged as a global environmental concern due to their persistent nature. In South Africa, microplastic research has primarily focused on marine systems. However, recent years have seen a shift in focus to studying MPs in South African freshwaters. In this study, MPs with a minimum size of 0.055 mm in surface water of the Vaal River, South Africa, were reported. MPs were 100% prevalent, with a mean numerical abundance of 0.68 ± 0.64 particles/m3. Small-sized MPs of < 1 mm accounted for the largest proportion. MPs were chemically identified as high-density polyethylene, low-density polyethylene, and polypropylene according to their Raman spectra. The prevalence of fragments (41.6%) and fibers (38.5%) over pellets (8.1%) indicates that microplastics are from secondary sources. The prevalence of polyethylene and polypropylene is consistent with microplastics being from secondary sources. These polymers are commonly used in single-use plastics, packing bags, textiles, and containers. These characteristics are of great concern due to their implications on the bioavailability and toxicological impacts of MPs. Consequently, these properties may pose more hazards to aquatic biota inhabiting the Vaal River.
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Affiliation(s)
- Dalia Saad
- School of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg, South Africa.
- Department of Chemistry, University of Pretoria, Pretoria, South Africa.
| | - Gibbon Ramaremisa
- School of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg, South Africa
| | - Michelle Ndlovu
- School of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg, South Africa
| | - Patricia Chauke
- School of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg, South Africa
| | | | - Luke Chimuka
- School of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg, South Africa
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Chen R, Zhao X, Wu X, Wang J, Wang X, Liang W. Research progress on occurrence characteristics and source analysis of microfibers in the marine environment. MARINE POLLUTION BULLETIN 2024; 198:115834. [PMID: 38061148 DOI: 10.1016/j.marpolbul.2023.115834] [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: 07/25/2023] [Revised: 11/13/2023] [Accepted: 11/18/2023] [Indexed: 01/05/2024]
Abstract
Synthetic microfiber pollution is a growing concern in the marine environment. However, critical issues associated with microfiber origins in marine environments have not been resolved. Herein, the potential sources of marine microfibers are systematically reviewed. The obtained results indicate that surface runoffs are primary contributors that transport land-based microfibers to oceans, and the breakdown of larger fiber plastic waste due to weathering processes is also a notable secondary source of marine microfibers. Additionally, there are three main approaches for marine microplastic source apportionment, namely, anthropogenic source classification, statistical analysis, and numerical simulations based on the Lagrangian particle tracking method. These methods establish the connections between characteristics, transport pathways and sources of microplastics, which provides new insights to further conduct microfiber source apportionment. This study helps to better understand sources analysis and transport pathways of microfibers into oceans and presents a scientific basis to further control microfiber pollution in marine environments.
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Affiliation(s)
- Rouzheng Chen
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 10012, China
| | - Xiaoli Zhao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 10012, China.
| | - Xiaowei Wu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 10012, China
| | - Junyu Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 10012, China
| | - Xia Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 10012, China
| | - Weigang Liang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 10012, China
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10
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Mubin AN, Islam ARMT, Hasan M, Islam MS, Ali MM, Siddique MAB, Alam MS, Rakib MRJ, Islam MS, Momtaz N, Senapathi V, Idris AM, Malafaia G. The path of microplastics through the rare biodiversity estuary region of the northern Bay of Bengal. JOURNAL OF CONTAMINANT HYDROLOGY 2024; 260:104271. [PMID: 38056088 DOI: 10.1016/j.jconhyd.2023.104271] [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: 09/07/2023] [Revised: 11/01/2023] [Accepted: 11/25/2023] [Indexed: 12/08/2023]
Abstract
Due to its harmful effects on ecosystems and human health, microplastic (MP) pollution has become a significant environmental problem on a global scale. Although MPs' pollution path and toxic effects on marine habitats have been examined worldwide, the studies are limited to the rare biodiversity estuary region of Hatiya Island from the northern Bay of Bengal. This study aimed to investigate the MP pollution path and its influencing factors in estuarine sediments and water in rare biodiversity Hatiya Island in the northern Bay of Bengal. Sixty water and sediment samples were collected from 10 sampling sites on the Island and analyzed for MPs. The abundance of MPs in sediment ranged from 67 to 143 pieces/kg, while the abundance in water ranged from 24.34 to 59 pieces/m3. The average concentrations of MPs in sediment and water were 110.90 ± 20.62 pieces/kg and 38.77 ± 10.09 pieces/m3, respectively. Most identified MPs from sediment samples were transparent (51%), while about 54.1% of the identified MPs from water samples were colored. The fragment was the most common form of MP in both compartments, with a value of 64.6% in sediment samples and 60.6% in water samples. In sediment and water samples, almost 74% and 80% of MP were <0.5 mm, respectively. Polypropylene (PP) was the most abundant polymer type, accounting for 51% of all identified polymers. The contamination factor, pollution load index, polymer risk score, and pollution risk score values indicated that the study area was moderately polluted with MPs. The spatial distribution patterns and hotspots of MPs echoed profound human pathways. Based on the results, sustainable management strategies and intervention measures were proposed to reduce the pollution level in the ecologically diverse area. This study provides important insights into evaluating estuary ecosystem susceptibility and mitigation policies against persistent MP issues.
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Affiliation(s)
- Al-Nure Mubin
- Department of Disaster Management, Begum Rokeya University, Rangpur 5400, Bangladesh
| | - Abu Reza Md Towfiqul Islam
- Department of Disaster Management, Begum Rokeya University, Rangpur 5400, Bangladesh; Department of Development Studies, Daffodil International University, Dhaka 1216, Bangladesh.
| | - Mehedi Hasan
- Department of Disaster Management, Begum Rokeya University, Rangpur 5400, Bangladesh
| | - Md Saiful Islam
- Department of Soil Science, Patuakhali Science and Technology University, Dumki, Patuakhali 8602, Bangladesh
| | - Mir Mohammad Ali
- Department of Aquaculture, Sher - e - Bangla Agricultural University, Dhaka 1207, 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
| | - Md Sha Alam
- Institute of Mining, Mineralogy & Metallurgy (IMMM), Bangladesh Council of Scientific & Industrial Research (BCSIR), Joypurhat 5900, Bangladesh
| | - Md Refat Jahan Rakib
- Department of Fisheries and Marine Science, Faculty of Science, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Muhammad Saiful Islam
- Fiber and Polymer Research Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dhaka 1205, Bangladesh
| | - Nasima Momtaz
- Biological Research Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dhaka 1205, 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, Saudi Arabia
| | - Guilherme Malafaia
- Post-Graduation Program in Conservation of Cerrado Natural Resources, Goiano Federal Institute, Goiânia, GO, Brazil; Post-Graduation Program in Ecology, Conservation, and Biodiversity, Federal University of Uberlândia, Uberlândia, MG, Brazil; Post-Graduation Program in Biotechnology and Biodiversity, Federal University of Goiás, Goiânia, GO, Brazil.
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11
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Siddique MAM, Shazada NE, Ritu JA, Turjo KEZ, Das K. Does the mouth size influence microplastic ingestion in fishes? MARINE POLLUTION BULLETIN 2024; 198:115861. [PMID: 38035541 DOI: 10.1016/j.marpolbul.2023.115861] [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: 09/29/2023] [Revised: 11/24/2023] [Accepted: 11/25/2023] [Indexed: 12/02/2023]
Abstract
This study investigated microplastic (MP) contamination in six tropical fish species of different mouth sizes and trophic levels from Saint Martin's Island, Bay of Bengal. A total of 309 microplastics (MPs) were extracted from the gastrointestinal tract (GT) of these selected fishes, where the presence of MPs was 100 %. The mean abundance of MPs was significantly varied among the species and ranged from 4.38 to 10 MPs/GT (p < 0.05). This study revealed that MP incidence was strongly correlated with the mouth-to-body ratio of the selected fishes (r = 0.424, p = 0.003) and trophic levels (r = 0.458, p = 0.002). Results suggest that fish with larger mouths are more likely to ingest MPs, intentionally or unintentionally, compared to those with smaller mouths.
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Affiliation(s)
- Mohammad Abdul Momin Siddique
- University of Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian South Research Center of Aquaculture and Biodiversity of Hydrogenases, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic; Department of Oceanography, Noakhali Science and Technology University, Noakhali 3814, Bangladesh.
| | - Nururshopa Eskander Shazada
- University of Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian South Research Center of Aquaculture and Biodiversity of Hydrogenases, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - Johora Akter Ritu
- Department of Oceanography, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | | | - Koushik Das
- University of Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian South Research Center of Aquaculture and Biodiversity of Hydrogenases, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic
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12
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Hossain MB, Pingki FH, Azad MAS, Nur AAU, Banik P, Paray BA, Arai T, Yu J. Microplastics in Different Tissues of a Commonly Consumed Fish, Scomberomorus guttatus, from a Large Subtropical Estuary: Accumulation, Characterization, and Contamination Assessment. BIOLOGY 2023; 12:1422. [PMID: 37998021 PMCID: PMC10669230 DOI: 10.3390/biology12111422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 10/31/2023] [Accepted: 11/10/2023] [Indexed: 11/25/2023]
Abstract
Microplastics (MPs) ingestion by fish signifies a worldwide threat to human health but limited research has examined their existence within the consumable portions (muscle) of fish. Thus, this study was undertaken to unveil the prevalence, characterization, and contamination extent of MPs across various body tissues, including the muscle of the king mackerel (S. guttatus) from the lower Meghna estuary in Bangladesh-a pioneering investigation in this region. In our analysis, we identified a total of 487 MPs, with an average abundance of 48.7 ± 20.3 MPs/individual. These MPs were distributed across different tissues, with respective concentrations of 0.84 ± 0.45 items/g in the digestive tract, 2.56 ± 0.73 items/g in the gills, and 0.3 ± 1.72 items/g in the muscle tissue. The observed variations among these tissue types were statistically significant (p < 0.05). Moreover, a significant positive correlation indicated that fish with higher weight had higher MPs in their gills and DT (digestive tract). The majority were <0.5 mm in size (97.74%) and exhibited a fiber-like shape (97.74%), with a notable prevalence of transparent (25.87%) and a pink coloration (27.92%). Remarkably, the majority of MPs were discovered within the size range of <0.5-1 mm (100%), particularly in the muscle tissue, signifying a substantial transfer of MPs into the human diet. Besides, we discovered only three polymer types of microplastics which could be attributed to the extensive use of food packaging, plastic containers, wrapping plastics, residential garbage, and plastic pipes that end up in the aquatic environment via river discharges. The contamination factor (CF) values of fish muscle (5.75) and the digestive tract (5.50) indicated that these fish organs were considerably contaminated (3 < CF < 6) with MPs. The pollution index of MPs (PLI > 1) indicated a high contamination level for MPs pollution of S. guttatus in the lower Meghna River estuary.
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Affiliation(s)
- Mohammad 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
| | - Farjana Haque Pingki
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | - Md. Abdus Samad Azad
- Department of Applied Chemistry and Chemical Engineering, 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
| | - Partho Banik
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, 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, University Brunei Darussalam, Jala Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Jimmy Yu
- School of Engineering and Built Environment, Griffith University, Brisbane, QLD 4111, Australia
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13
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Islam MS, Islam Z, Jamal AHMSIM, Momtaz N, Beauty SA. Removal efficiencies of microplastics of the three largest drinking water treatment plants in Bangladesh. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 895:165155. [PMID: 37379932 DOI: 10.1016/j.scitotenv.2023.165155] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/15/2023] [Accepted: 06/25/2023] [Indexed: 06/30/2023]
Abstract
Drinking water treatment plants (DWTPs) are intended to provide safe water to the municipality, typically by treating surface waters from rivers, lakes, and streams. Regrettably, all of these water sources for DWTPs have been reported to be contaminated by microplastics (MPs). Hence, there is an urgent need to investigate the removal efficiencies of MPs from raw waters in the conventional DWTPs anticipating public health concerns. In this experiment, MPs in the raw and treated waters of the three major DWTPs of Bangladesh, having different water treatment processes, were evaluated. The concentrations of MPs in the inlet points of Saidabad Water Treatment Plant phase-1 and 2 (SWTP-1 and SWTP-2), which share a similar water source of the Shitalakshya River, were 25.7 ± 9.8 and 26.01 ± 9.8 items L-1. The third plant, Padma Water Treatment Plant (PWTP) utilizes water from the Padma River and had an initial MP concentration of 6.2 ± 1.6 items L-1. The studied DWTPs, with their existing treatment processes, were found to reduce the MP loads substantially. The final MP concentrations in treated waters of SWTP-1, SWTP-2, and PWTP were 0.3 ± 0.03, 0.4 ± 0.01, and 0.05 ± 0.02 items L-1 with the removal efficiencies of 98.8, 98.5, and 99.2 %, respectively. The considered size range of MP was 20 μm to <5000. Fragments and fibers were the two predominant MP shapes. In terms of polymer, the MPs were polypropylene (PP, 48 %), polyethylene (PE, 35 %), polyethylene terephthalate (PET, 11 %), and polystyrene (PS, 6 %). The field emission scanning electron microscopy-energy dispersive X-ray spectroscopy (FESEM-EDX) revealed the fractured and rough surfaces of the remaining MPs, which were also found to be contaminated with heavy metals, like lead (Pb), cadmium (Cd), chromium (Cr), arsenic (As), copper (Cu), and zinc (Zn). Hence, additional initiatives are required to remove the residual MPs from the treated waters to safeguard the city dwellers from potential hazards.
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Affiliation(s)
- Muhammad Saiful Islam
- Fiber and Polymer Research Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh.
| | - Zahidul Islam
- Fiber and Polymer Research Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh
| | - A H M Shofiul Islam Molla Jamal
- Institute of National Analytical Research & Service (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh
| | - Nasima Momtaz
- Biological Research Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh
| | - Sadia Afrin Beauty
- Saidabad Water Treatment Plant, Dhaka Water Supply & Sewerage Authority, Dhaka 1204, Bangladesh
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14
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Hossain MB, Yu J, Nur AAU, Banik P, Jolly YN, Mamun MA, Paray BA, Arai T. Distribution, characterization and contamination risk assessment of microplastics in the sediment from the world's top sediment-laden estuary. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118472. [PMID: 37384995 DOI: 10.1016/j.jenvman.2023.118472] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 06/18/2023] [Accepted: 06/19/2023] [Indexed: 07/01/2023]
Abstract
Microplastics (MPs) have gained a serious attention as an emerging contaminant throughout the world because of their persistence and possible risks to aquatic ecosystems and human well-being. However, knowledge on MPs contamination from sub-tropical coastal systems is limited, and no study has been conducted on the MPs contamination in sediment from one of the highest sediment-laden estuaries, Meghna River, in the world. This is the first study to examine the quantity, morpho-chemical characteristics and contamination risk level of MPs from this large scale river. MPs were extracted from the sediment samples of 10 stations along the banks of the estuary by density separation, and then characterized using a stereomicroscope and Fourier Transform Infrared (FTIR) spectroscopy. The incidence of MPs varied from 12.5 to 55 item/kg dry sediment with an average of 28.67 ± 10.80 item/kg. The majority (78.5%) of the MPs were under 0.5 mm in size, with fibers being the most (74.1%) prevalent MPs type. Polypropylene (PP) was found to be the predominant polymer (53.4%), followed by polyethylene (PE, 20%), polystyrene (PS, 13.3%), and polyvinyl chloride (PVC, 13.3%). The highest occurrence of PP indicted the MPs in the estuary might be originated from clothing and dying industries, fishing nets, food packages, and pulp industries. The sampling stations were contaminated with MPs as shown by the contamination factor (CF) values and pollutant load index (PLI), both of which were >1. This study exposed new insights on the status of MPs in the sediments of the Meghna River, laying the groundwork for future research. The findings will contribute to estimate the global share of MPs to the marine environment.
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Affiliation(s)
- M Belal Hossain
- School of Engineering and Built Environment, Griffith University, Brisbane, QLD, Australia; Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali-3814, Bangladesh.
| | - Jimmy Yu
- School of Engineering and Built Environment, Griffith University, Brisbane, QLD, Australia
| | - As-Ad Ujjaman Nur
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali-3814, Bangladesh
| | - Partho Banik
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali-3814, Bangladesh
| | - Yeasmin N Jolly
- Atmospheric and Environmental Chemistry Laboratory, Chemistry Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh
| | - Md Al- Mamun
- Materials Science Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, Dhaka, 1000, Bangladesh
| | - Bilal Ahamad Paray
- 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 BE1410, Brunei Darussalam
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15
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Fatema K, Auditi TI, Biswas S, Ayesha SB, Helal Uddin M, Sumon KA, Goswami C, Bhandari RK, Rashid H. Investigations of hemato-biochemical and histopathological parameters, and growth performance of walking catfish (Clarias batrachus) exposed to PET and LDPE microplastics. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 102:104250. [PMID: 37595935 DOI: 10.1016/j.etap.2023.104250] [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: 04/01/2023] [Revised: 08/01/2023] [Accepted: 08/15/2023] [Indexed: 08/20/2023]
Abstract
Fish inhabiting various trophic levels are affected differently as the presence of microplastic (MP) in the water column and their ingestion by fish varies. Walking catfish (Clarias batrachus) inhabits the bottom of the water bodies. To understand the effects of MP, we exposed C. batrachus to two types of MP - polyethylene terephthalate (PET) and low-density polyethylene (LDPE) for 60 days. After exposure, hematological indices, mainly red blood cells and hemoglobin levels decreased, and white blood cells increased significantly compared to the control group (p < 0.05). A significant increase in the levels of blood urea and glucose was observed, and serum glutamic pyruvate transaminase and serum glutamyl oxaloacetic transaminase activity remained elevated (p < 0.05). Histopathological examination of the liver, kidney, intestine, and gills showed morphological alterations. Moreover, MP exposure caused growth retardation (p < 0.05) in C. batrachus. Widespread pollution of water bodies by MP may impose serious ecological risks to bottom-feeding fish in Bangladesh.
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Affiliation(s)
- Kaniz Fatema
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh; Department of Fisheries Management, Hajee Mohammad Danesh Science and Technology University, Dinajpur 5200, Bangladesh
| | - Tasnia Islam Auditi
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Shema Biswas
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Sumaiya Binte Ayesha
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Md Helal Uddin
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Kizar Ahmed Sumon
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Chayon Goswami
- Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Ramji Kumar Bhandari
- Department of Biology, University of North Carolina at Greensboro, Greensboro, NC 27412, USA
| | - Harunur Rashid
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
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16
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Arafat ST, Tanoiri H, Yokota M, Nakano H, Arakawa H, Terahara T, Kobayashi T. Microplastic pollution in the gastrointestinal tract of giant river catfish Sperata seenghala (Sykes, 1839) from the Meghna River, Bangladesh. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:89627-89637. [PMID: 37454010 DOI: 10.1007/s11356-023-28750-z] [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: 01/30/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023]
Abstract
Freshwater rivers are considered the major route for microplastics (MPs), yet limited studies have been reported on MPs in freshwater river fish, especially in Bangladesh. This research reveals the intake of MPs by the giant river catfish Sperata seenghala, collected from the Meghna River, which is the only outlet of the Ganges-Brahmaputra River. Three locations, namely, Chandpur Sadar, Bhola Sadar, and Char Fasson, along the Meghna River, were selected in order to investigate the gastrointestinal tracts (GIT) of the fish. Ninety percent (n=27) of fish (n=30) were contaminated, with fragment-shaped MPs (65%) as the most abundant among the four types. A total of 179 MP particles were detected using micro-Fourier transformed infrared spectroscopy (μ-FTIR), with an average of 5.96 ± 1.32 MP particles per fish. Among the four size groups, the highest proportion of MPs (54%) occurred in the 45-100 μm group; the dominant color among the seven color groups was white (30%). The highest quantity of MPs was found in the relatively densely populated Chandpur Sadar region. Polypropylene-polyethylene copolymer (PP-PE, 23%) was proportionally dominant among the 15 types. No significant relationship was found between the total number of observed MPs and the GIT weight. This study will help us to understand MP pollution in S. seenghala that may transmit to the human body through the food chain.
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Affiliation(s)
- Shaikh Tareq Arafat
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo, 108-8477, Japan.
- Fisheries and Marine Resource Technology Discipline, Khulna University, Sher-E-Bangla Road, Khulna, 9208, Bangladesh.
| | - Hiraku Tanoiri
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo, 108-8477, Japan
| | - Masashi Yokota
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo, 108-8477, Japan
| | - Haruka Nakano
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo, 108-8477, Japan
- Center for Ocean Plastic Studies (COPS), Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka, 816-8580, Japan
| | - Hisayuki Arakawa
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo, 108-8477, Japan
| | - Takeshi Terahara
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo, 108-8477, Japan
| | - Takeshi Kobayashi
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo, 108-8477, Japan
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17
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Tajwar M, Hasan M, Shreya SS, Rahman M, Sakib N, Gazi MY. Risk assessment of microplastic pollution in an industrial region of Bangladesh. Heliyon 2023; 9:e17949. [PMID: 37483706 PMCID: PMC10359874 DOI: 10.1016/j.heliyon.2023.e17949] [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: 04/05/2023] [Revised: 07/01/2023] [Accepted: 07/03/2023] [Indexed: 07/25/2023] Open
Abstract
Despite the high potential for microplastics (MPs) pollution in Bangladesh, the presence of MPs in the industrial region has largely been unexplored in Bangladesh. So, this study was conducted to determine whether MP pollution is prevalent in the industrial soil of Bangladesh and the extent of its toxicity. To examine MPs, a total of 12 soil samples were collected from the industrial region of Narayanganj, and a stereoscopic microscope was used to visually identify the MPs. Prior to that the technique of density separation and sieving was applied to extract MPs from those 12 soil samples. Among the twelve investigated samples, a total of 151 MPs (Mean: 12.6 ± 7.9 particles kg-1) were identified, which were mostly white and ranged in size from 0.5 to 1 mm. Different types of MPs according to their shapes such as fibers (60.3%), fragments (19.2%), films (10.6%), and foam (9.9%) have been detected. 7 MPs (Mean: 0.58 ± 0.79) have been found in 3 urban farmland sites, 15 MPs (Mean: 1.87 ± 1.81) in two near metropolitan areas, and 129 MPs (Mean: 4.6 ± 4.39) in 7 industrial locations. Five polymers were identified by μ-FTIR, among which Polyamide predominated, followed by Polypropylene. According to risk assessments, the region falls under hazard categories II and III, suggesting a moderate to high risk. This paper gives thorough information on the toxicity of MP in an industrial location; therefore, it may be useful in the development of effective methods to address environmental issues.
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Affiliation(s)
- Mahir Tajwar
- Department of Geology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Mahmudul Hasan
- Department of Oceanography, University of Dhaka, Dhaka, 1000, Bangladesh
| | | | - Mahfuzur Rahman
- Department of Oceanography, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - Nazmus Sakib
- Bangladesh Water Development Board, Dhaka, 1215, Bangladesh
| | - Md Yousuf Gazi
- Department of Geology, University of Dhaka, Dhaka, 1000, Bangladesh
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18
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Jiang S, Hossain MJ, Uddin SA, Ye Q, Wu Y, Jin J, Su H, Liu ZB, He L, Zhang J. Nitrogen accumulation and attenuation in the Ganges-Brahmaputra-Meghna river system: An evaluation with multiple stable isotopes and microbiota. MARINE POLLUTION BULLETIN 2023; 193:115204. [PMID: 37390626 DOI: 10.1016/j.marpolbul.2023.115204] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/15/2023] [Accepted: 06/17/2023] [Indexed: 07/02/2023]
Abstract
We examined dissolved inorganic nitrogen (DIN) accumulation and attenuation in the lower stream and estuary of the Ganges-Brahmaputra-Meghna River system. In the lower stream of Ganges, Meghna and Brahmaputra rivers, nitrate (NO3-) was the dominant component in the DIN pool apart from the site near an industrial center. Concentrations of NO3- displayed minor differences between surface and bottom water, accounting for >90 % of the riverine DIN pool. Sources of NO3- were likely to be municipal wastewater and fertilizer based on signals of 15N-NO3- and 18O-NO3-. In the Meghna River, ammonium concentration in river water increased due to sewage discharge from local industrial centers. In the estuary, likely due to the high-abundance nitrifiers, nitrification rates overwhelmed removal rates and led to NO3- accumulation. Towards coastal ocean, DIN concentrations decreased due to seawater dilution and biological assimilation, indicating a tight linkage between the riverine input and ecological stability in the receiving water.
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Affiliation(s)
- Shan Jiang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China.
| | - Md Jaker Hossain
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
| | - Sheikh Aftab Uddin
- Institute of Marine Sciences, University of Chittagong, Chittagong 4331, Bangladesh
| | - Qi Ye
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
| | - Ying Wu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
| | - Jie Jin
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
| | - Han Su
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
| | - Zheng Bo Liu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
| | - Lijun He
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
| | - Jing Zhang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China; School of Oceanography, Shanghai Jiao Tong University, Shanghai 200240, China
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19
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Oswald SB, Ragas AMJ, Schoor MM, Collas FPL. Quantification and characterization of macro- and mesoplastic items in the water column of the river Waal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 877:162827. [PMID: 36921866 DOI: 10.1016/j.scitotenv.2023.162827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/17/2023] [Accepted: 03/09/2023] [Indexed: 05/06/2023]
Abstract
Although studies on plastic concentrations mainly focus on the marine environment, recently, an increasing number of studies point out environmental consequences in freshwater environments around the world. However, there still is a paucity of field data on the abundance of riverine plastic items, in particular in the water column. In this study, we provide an overview of macro- and mesoplastic concentrations, categories, ages, and origin over several years in the water column of the river Waal, in the Netherlands. The river water column was passively sampled at two selected locations using a stow net at very low and low discharges (range 537 - 1345 m3.s-1). The most dominant macro- and mesoplastic categories were 'Miscellaneous plastic waste', including "Plastic film 2.5 - 50 cm (soft)" and "Plastic film 0 - 2.5 cm (soft)" as main categories. Macro- and mesoplastic categories were found to show limited variability during several years of monitoring. The mean macroplastic concentration (± SD) ranged between 2.2 × 10-3 ± 0.001 and 7.4 × 10-3 ± 0.003 particles.m-3 for October 2020 and November 2018, respectively. In 2020, the plastic concentrations showed a sharp decrease compared to the previous years, most likely as a consequence of the COVID-19 crisis. The origin of the plastics (e.g., countries) also showed little variability during monitoring. The consistency of several characteristics of the collected plastic suggests that the same sources were responsible for the macro- and mesoplastic input into the river Waal during low discharges and over multiple years. We present the first temporal assessment of macro- and mesoplastic concentrations and composition in the water column of the river Waal. The outcome of the current study can be used to support the development of management measures by decision makers.
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Affiliation(s)
- Stephanie B Oswald
- Department of Environmental Science, Radboud Institute for Biological and Environmental Science (RIBES), Radboud University, Nijmegen, the Netherlands.
| | - Ad M J Ragas
- Department of Environmental Science, Radboud Institute for Biological and Environmental Science (RIBES), Radboud University, Nijmegen, the Netherlands
| | | | - Frank P L Collas
- Department of Environmental Science, Radboud Institute for Biological and Environmental Science (RIBES), Radboud University, Nijmegen, the Netherlands; Department of Animal Ecology and Physiology, Radboud Institute for Biological and Environmental Science (RIBES), Radboud University, Nijmegen, the Netherlands
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20
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Hossain MB, Yu J, Ujjaman Nur AA, Banik P, Jolly YN, Mamun MA, Arai T, Albeshr MF. Microplastics in surface water from a mighty subtropical estuary: First observations on occurrence, characterization, and contamination assessment. ENVIRONMENTAL RESEARCH 2023; 226:115594. [PMID: 36907342 DOI: 10.1016/j.envres.2023.115594] [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: 12/05/2022] [Revised: 02/23/2023] [Accepted: 02/27/2023] [Indexed: 06/18/2023]
Abstract
Estuarine contamination by Microplastics (MPs) is a mater of serious concern since these areas offer the society valuable ecosystem, economic, and recreational services such as breeding and feeding ground for fish, carbon fixation, nutrients recycling and port development. The Meghna estuary, located along the Bengal delta coast, provides livelihoods for thousands of peoples in Bangladesh, and served as breeding ground for national fish, Hilsha shad. Therefore, knowledge and understanding on any kind of pollution including MPs of this estuary is essential. In this study, the abundance, characteristics and contamination assessment of MPs from the surface water of a Meghna estuary were investigated for the first time. The results demonstrated that MPs were present in all samples and the abundance ranged from 33.33 to 316.67 item/m3 with a mean value of 128.89 ± 67.94 item/m3. Morphological analyses resulted in four types of MPs such as fibers (87%), fragments (6%), foam (4%), and films (3%) with the majority of these being colored (62%) and smaller (<0.5 mm) in size (88%). On the other hand, FTIR analysis for chemical characteristics confirmed five types of polymers, including polythene (PE), polystyrene (PS), polythene terephthalate (PET), polypropylene (PP), and polyvinyl chloride (PVC). The area was determined to be moderately to severely contaminated with MPs based on contamination factor (CF) values (6.18 ± 2.08 to 2.50 ± 1.0) and the pollutant load index (PLI) value (1.94 ± 0.33) as these values were > 3-6 for CF, and >1 for PLI. These results can be utilized to develop policy for the protection of this important environment.
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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.
| | - Jimmy Yu
- School of Engineering and Built Environment, Griffith University, Brisbane, QLD, 4111, Australia
| | - As-Ad Ujjaman Nur
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - Partho Banik
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - Yeasmin N Jolly
- Atmospheric and Environmental Chemistry Laboratory, Chemistry Division, Atomic Energy Centre, Dhaka, 1000, Bangladesh
| | - Md Al- Mamun
- Materials Science Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, Dhaka, 1000, Bangladesh.
| | - Takaomi Arai
- Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam
| | - Mohammed Fahad Albeshr
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
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21
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Gündoğdu S, Kutlu B, Özcan T, Büyükdeveci F, Blettler MCM. Microplastic pollution in two remote rivers of Türkiye. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:791. [PMID: 37261625 DOI: 10.1007/s10661-023-11426-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/26/2023] [Indexed: 06/02/2023]
Abstract
Microplastic pollution in aquatic ecosystems presents an emerging environmental threat that can have adverse effects on ecology, endanger aquatic species, and result in economic damage. Despite the numerous studies reporting the presence of microplastics in marine environments, research into their presence in freshwater systems or inland waters remains limited. This study aimed to assess the level of microplastic pollution transported by the Munzur and Pülümür Rivers and some small rivers that flow into the Uzunçayır dam lake, which is the confluence of the Munzur and Pülümür Rivers in Türkiye. Samples were collected from 23 stations, with the concentration of microplastics ranging from 0.01 MP/m3 at P-4 station to 28.21 MP/m3 at P-10, a station located near a city. Microplastics comprise four types: fiber, film, fragment, and glitter. The average size of microplastics was 1.46 ± 0.05 mm, with the average size of fibers, films, fragments, and glitter-type microplastics being 1.58 ± 0.07 mm, 1.23 ± 0.10 mm, 1.21 ± 0.11 mm, and 0.78 ± 0.16 mm, respectively. The most frequent polymers were polyethylene (31.8%), polystyrene (21.1%), and polypropylene (10.5%). Despite being considered remote and less populated rivers compared to other river systems in Türkiye, all sampling sites showed varying concentrations of microplastics.
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Affiliation(s)
- Sedat Gündoğdu
- Faculty of Fisheries, Department of Basic Sciences, Cukurova University, 01330, Adana, Turkey.
| | - Banu Kutlu
- Faculty of Fisheries, Department of Basic Sciences, Munzur University, 62000, Tunceli, Turkey
| | - Tahir Özcan
- Faculty of Marine Sciences and Technology, Iskenderun Technical University, TR-31200, Iskenderun, Hatay, Turkey
| | - Ferhat Büyükdeveci
- Faculty of Fisheries, Cukurova University, 01330, Adana, Turkey
- Adana Directorate of Provincial Food, Agriculture and Livestock, 01330, Adana, Turkey
| | - Martin C M Blettler
- The National Institute of Limnology (INALI; CONICET-UNL), Santa Fe, Argentina
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22
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Jiang H, Bu J, Bian K, Su J, Wang Z, Sun H, Wang H, Zhang Y, Wang C. Surface change of microplastics in aquatic environment and the removal by froth flotation assisted with cationic and anionic surfactants. WATER RESEARCH 2023; 233:119794. [PMID: 36868113 DOI: 10.1016/j.watres.2023.119794] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 01/29/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
Microplastics (MPs) are increasingly released into the environment due to the widespread usage and improper management of plastics. Considerable research efforts have been devoted to the remediation of MPs. Froth flotation has been demonstrated as an effective method to remove MPs in water and sediment. However, there is a lack of knowledge on the regulation of the hydrophobicity/hydrophilicity of MPs surfaces. We found that exposure to the natural environment resulted in the increased hydrophilicity of MPs. The flotation efficiencies of polyvinyl chloride (PVC), polypropylene (PP), polystyrene (PS), and polyethylene glycol terephthalate (PET) MPs decreased to zero after six months of natural incubation in rivers. According to various characterizations, the hydrophilization mechanism is mainly correlated with surface oxidation and the deposition of clay minerals. Inspired by surface wettability conversion, we applied surfactants (collectors) to enhance MPs hydrophobicity and flotation efficiency. Anionic sodium oleate (NaOL) and cationic dodecyl trimethyl ammonium chloride (DTAC) were used to regulate surface hydrophobicity. The effects of collector concentration, pH, conditioning time, and metal ions on MPs flotation were thoroughly elucidated. Characterizations and adsorption experiments were performed to describe the heterogeneous adsorption of surfactants on MPs surfaces. The interaction between surfactants and MPs was explained through density functional theory (DFT) simulations. The dispersion energy between hydrophobic hydrocarbon chains attracts collectors on the MPs surface, and the collector molecules wrap and laminate to MPs surfaces. Flotation using NaOL exhibited a higher removal efficiency, and NaOL was environmentally friendly. Subsequently, we investigated the activation of Ca2+, Fe3+, and Al3+ to further improve the collecting efficiency of NaOL. Under the optimized conditions, MPs in natural rivers could be removed by froth flotation. This study shows the great promise of froth flotation for the application of MPs removal.
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Affiliation(s)
- Hongru Jiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083 Hunan, PR China
| | - Jiaqi Bu
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083 Hunan, PR China
| | - Kai Bian
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083 Hunan, PR China
| | - Jiming Su
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083 Hunan, PR China
| | - Zhiyi Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083 Hunan, PR China
| | - Han Sun
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083 Hunan, PR China
| | - Hui Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083 Hunan, PR China.
| | - Yingshuang Zhang
- School of Chemical Engineering and Technology, Xinjiang University, 830017 Urumqi, Xinjiang, PR China.
| | - Chongqing Wang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, PR China
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23
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Islam MS, Hasan MR, Islam Z. Abundance, characteristics, and spatial-temporal distribution of microplastics in sea salts along the Cox's Bazar coastal area, Bangladesh. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:19994-20005. [PMID: 36242671 DOI: 10.1007/s11356-022-23596-3] [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: 05/05/2022] [Accepted: 10/09/2022] [Indexed: 06/16/2023]
Abstract
Microplastics (MPs), together with microfibers, have emerged as a contaminant of concern all around the globe. MPs have been detected in freshwater, seawater, sediment, and aquatic species among others. As suggested by several recent investigations, sea salts, a daily intake item by humans, are also contaminated by MPs. The current article describes MPs' occurrence, distribution, type, and timeline variation in raw sea salts from Cox's Bazar, Bangladesh. MPs have been detected in every collected salt sample, and quantity varied from 28.53 ± 2.43 to 93.53 ± 4.21 particles per kg, which was about 52.48 ± 1.72 to 67.46 ± 3.81 µg/kg of raw salt. Microfibers were MPs' dominant shape category, and the plastic types were mainly polyester or nylon. Other types of MPs were polyethylene (PE), polypropylene (PP), polycarbonate (PC), polyurethane (PU), and polystyrene (PS) in decreasing amounts. The majority of the MPs in the sea salts were in the size range of ˂ 3-1 mm. The total amount of MPs and plastic-type variation due to sampling location (p ˃ 0.05) and because of the time period (p ˃ 0.05) was found insignificant. Acetaldehyde, a volatile toxic substance produced by the degradation of polyester polymer chains, was detected in MPs in the range of 0.37 to 1.72 µg/g by headspace GC-MS analysis. Hence, the sea salts contaminated with MPs pose a public health hazard. Microplastics extraction from sea salts and their characterization.
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Affiliation(s)
- Muhammad Saiful Islam
- Fiber and Polymer Research Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, 1205, Bangladesh.
| | - Md Rashed Hasan
- Fiber and Polymer Research Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, 1205, Bangladesh
| | - Zahidul Islam
- Fiber and Polymer Research Division, BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, 1205, Bangladesh
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24
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Yin Z. The sustainable management of microplastics pollution in sediments from China: Promulgating relevant laws and implementing targeted management. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 856:159262. [PMID: 36208749 DOI: 10.1016/j.scitotenv.2022.159262] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/02/2022] [Accepted: 10/02/2022] [Indexed: 06/16/2023]
Abstract
Microplastics (MPs) pollution in sediments brings a huge challenge to the sustainable development of society. China is one of the countries with the largest production and application of plastic products in the world. The sustainable management of MPs pollution in sediments from China has important implications for achieving the United Nations Sustainable Development Goals. There is a lack of targeted management measures for the sustainable management of MPs pollution in sediments from China. In this study, 74 study areas were collected to analyze the pollution status of MPs in sediments from China. The results showed that the study on MPs pollution in sediments from China was concentrated in the Bohai Rim Economic Circle (n = 12), the Yangtze River Delta Economic Circle (n = 16) and the Pearl River Delta Economic Circle (n = 13). And the average abundance of MPs in sediments from China showed a decreasing trend from coastal to inland. Fiber had the highest centrality degree in the correlation network of MPs types. The reduction of fiber in sediments can reduce the diversity of MPs in sediments from China. Population density, economic level, urbanization level and industrial structure were significantly correlated with MPs types in sediments from China. The targeted management measures can be formulated based on the contribution of different human activities to MPs types. Managing pollution sources and cutting off transmission pathways are effective means for the targeted management of MPs in sediments. In addition, legislation can effectively restrict the application of plastic products. Promulgating relevant laws and implementing targeted management are conducive to the sustainable management of MPs pollution in sediments from China. In future studies, a big data platform for MPs pollution should be established to obtain a comprehensive understanding in the pollution status of MPs in sediments from China.
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Affiliation(s)
- Zhenzhou Yin
- School of Civil Engineering, Inner Mongolia University of Technology, Huhhot 010051, China.
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25
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Chen Y, Shen Z, Li G, Wang K, Cai X, Xiong X, Wu C. Factors affecting microplastic accumulation by wild fish: A case study in the Nandu River, South China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 847:157486. [PMID: 35868373 DOI: 10.1016/j.scitotenv.2022.157486] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/13/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Quantifying microplastic accumulation in aquatic organisms is important for risk assessments in natural habitats. However, studies on the factors influencing microplastic accumulation by fish, particularly in natural water bodies, remain limited. In this study, we monitored the microplastic pollution characteristics in the fish digestive tract and surface water of the Nandu River, the largest river in Hainan, China. Among the 179 fish examined, microplastics were detected in 90.5 %, covering 27 fish species. Moreover, low abundance of microplastics occurred among the different fish, with an average of 3.20 ± 2.60 particles per fish. Fibrous microplastics with a large size (>500 μm) were dominant in both the water column and fish. In this study, fish size, feeding habits, and living habitats did not affect microplastic abundance in fish. Based on the analysis of differences in the abundance and morphological characteristics of microplastics in water column and fish, we suggested that the random intake and differential excretion of microplastics with different characteristics by fish might lead to the homogeneity of microplastic accumulation in different fish. Our study suggest that more attention should be given to the negative effects of microplastics on small fish owing to the higher microplastic exposure per gram weight, and further improvement in microplastic risk assessment methods is required.
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Affiliation(s)
- Yuling Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Zhixin Shen
- Hainan Academy of Ocean and Fisheries Sciences, Haikou 571126, China
| | - Gaojun Li
- Hainan Academy of Ocean and Fisheries Sciences, Haikou 571126, China
| | - Kehuan Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Xingwei Cai
- Hainan Academy of Ocean and Fisheries Sciences, Haikou 571126, China
| | - Xiong Xiong
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| | - Chenxi Wu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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26
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He B, Liu A, Duan H, Wijesiri B, Goonetilleke A. Risk associated with microplastics in urban aquatic environments: A critical review. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129587. [PMID: 35863231 DOI: 10.1016/j.jhazmat.2022.129587] [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: 05/18/2022] [Revised: 07/07/2022] [Accepted: 07/10/2022] [Indexed: 06/15/2023]
Abstract
The presence of microplastics (MPs) has been recognized as a significant environmental threat due to adverse effects spanning from molecular level, organism health, ecosystem services to human health and well-being. MPs are complex environmental contaminants as they bind to a wide range of other contaminants. MPs associated contaminants include toxic chemical substances that are used as additives during the plastic manufacturing process and adsorbed contaminants that co-exist with MPs in aquatic environments. With the transfer between the water column and sediments, and the migration within aquatic systems, such contaminants associated MPs potentially pose high risk to aquatic systems. However, only limited research has been undertaken currently to link the environmental risk associated with MPs occurrence and movement behaviour in aquatic systems. Given the significant environmental risk and current knowledge gaps, this review focuses on the role played by the abundance of different MP species in water and sediment compartments as well as provides the context for assessing and quantifying the multiple risks associated with the occurrence and movement behaviour of different MP types. Based on the review of past literature, it is found that the physicochemical properties of MPs influence the release/sorption of other contaminants and current MPs transport modelling studies have primarily focused on virgin plastics rather than aged plastics. Additionally, risk assessment of contaminants-associated MPs needs significantly more research. This paper consolidates the current state-of-the art knowledge on the source to sink movement behaviour of MPs and methodologies for assessing the risk of different MP species. Moreover, knowledge gaps and emerging trends in the field are also identified for future research endeavours.
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Affiliation(s)
- Beibei He
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China; College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
| | - An Liu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Huabo Duan
- College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
| | - Buddhi Wijesiri
- School of Civil and Environmental Engineering, Faculty of Engineering, Queensland University of Technology (QUT), P.O. Box 2434, Brisbane, Qld 4001, Australia
| | - Ashantha Goonetilleke
- School of Civil and Environmental Engineering, Faculty of Engineering, Queensland University of Technology (QUT), P.O. Box 2434, Brisbane, Qld 4001, Australia
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