Microplastic contamination and ecological risk assessment in sediments and waters of ship-dismantling yards along the Bay of Bengal
Marine Pollution Bulletin2025
9 citations
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Score: 53
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Jahanara Akhter Lipi,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
M. Belal Hossain,
M. Belal Hossain,
Jahanara Akhter Lipi,
M. Belal Hossain,
M. Belal Hossain,
Khadijatul Kubra Riya,
M. Belal Hossain,
M. Belal Hossain,
M. Belal Hossain,
M. Belal Hossain,
M. Belal Hossain,
M. Belal Hossain,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
M. Faisal,
Khadijatul Kubra Riya,
M. Belal Hossain,
M. Belal Hossain,
Jahanara Akhter Lipi,
Jimmy C. Yu,
Khadijatul Kubra Riya,
Jimmy C. Yu,
Khadijatul Kubra Riya,
Khadijatul Kubra Riya,
M. Belal Hossain,
Jahanara Akhter Lipi,
Khadijatul Kubra Riya,
Khadijatul Kubra Riya,
Khadijatul Kubra Riya,
M. Belal Hossain,
M. Belal Hossain,
Nazmun Naher Rima,
Md. Kamal Hossain,
M. Belal Hossain,
Jahanara Akhter Lipi,
Md. Kamal Hossain,
Md. Kamal Hossain,
Jahanara Akhter Lipi,
Khadijatul Kubra Riya,
Bilal Ahamad Paray,
Khadijatul Kubra Riya,
Md. Kamal Hossain,
Md. Kamal Hossain,
Khadijatul Kubra Riya,
Khadijatul Kubra Riya,
Khadijatul Kubra Riya,
M. Belal Hossain,
Khadijatul Kubra Riya,
Nazmun Naher Rima,
Md. Kamal Hossain,
Bilal Ahamad Paray,
Takaomi Arai
Bilal Ahamad Paray,
Takaomi Arai
Takaomi Arai
Bilal Ahamad Paray,
Md. Kamal Hossain,
Bilal Ahamad Paray,
Takaomi Arai
Jimmy C. Yu,
Takaomi Arai
Jimmy C. Yu,
Takaomi Arai
Md. Kamal Hossain,
Md. Kamal Hossain,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Nazmun Naher Rima,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
M. Belal Hossain,
Bilal Ahamad Paray,
Takaomi Arai
Takaomi Arai
Jimmy C. Yu,
Takaomi Arai
Takaomi Arai
M. Belal Hossain,
Takaomi Arai
Bilal Ahamad Paray,
Takaomi Arai
Bilal Ahamad Paray,
Takaomi Arai
Bilal Ahamad Paray,
M. Belal Hossain,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Jimmy C. Yu,
Takaomi Arai
Takaomi Arai
Takaomi Arai
Jimmy C. Yu,
Takaomi Arai
Takaomi Arai
Jimmy C. Yu,
M. Belal Hossain,
Takaomi Arai
M. Belal Hossain,
Bilal Ahamad Paray,
M. Belal Hossain,
M. Belal Hossain,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
M. Belal Hossain,
Jimmy C. Yu,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Jimmy C. Yu,
M. Belal Hossain,
M. Belal Hossain,
Bilal Ahamad Paray,
M. Belal Hossain,
Takaomi Arai
Takaomi Arai
M. Belal Hossain,
Jimmy C. Yu,
Takaomi Arai
M. Belal Hossain,
Takaomi Arai
Takaomi Arai
M. Belal Hossain,
M. Belal Hossain,
Takaomi Arai
Takaomi Arai
Takaomi Arai
Jimmy C. Yu,
Takaomi Arai
M. Belal Hossain,
Takaomi Arai
Summary
Researchers assessed microplastic contamination in sediment and water from one of the largest ship-dismantling yards along the Bay of Bengal coast. Fibers were the dominant type found, with PET being the most common polymer, and stations near intensive shipbreaking operations showed significantly higher concentrations. Ecological risk assessments indicated moderate to considerable contamination levels, highlighting shipbreaking as a significant source of microplastic pollution.
This study investigated the extent of microplastic (MP) contamination in sediment and surface water from one of the largest shipbreaking yards along the Bay of Bengal coast. A total of 48 samples (24 each from sediment and water) were collected and analyzed to assess MP abundance, polymer characteristics, sources, and the associated potential ecological risks. MPs were extracted, identified using microscopy and FTIR spectroscopy, and classified by type, color, and polymer composition. MP concentrations averaged 73.54 ± 8.61 items/kg in sediment and 218.56 ± 19.12 items/m<sup>3</sup> in water, with fibers being the dominant morphology (87.8-92.1 % in sediment, 91.5-100 % in water). Stations in close to intensive shipbreaking operations exhibited significantly higher abundances. Polymer characterization revealed PET as the dominant type, comprising 37.5 % in water and 25 % in sediment, followed by PS (25 % in both matrices) and PP (12.5 % in water and 25 % in sediment). Ecological risk assessments revealed moderate to considerable contamination levels. Pollution Load Index (PLI) values ranged from 1.02 to 1.433 in sediment and 1.02-1.68 in water. Polymeric Hazard Index (PHI) values reached maximum at 254.37 (sediment) and 265.68 (water), with corresponding Ecological Risk Index (ERI) values reaching 312.88 and 433.06, respectively. Stations S6 and S3, located near areas of intensive shipbreaking activity, exhibited the highest ecological risks. These findings emphasized the urgent need for regulatory intervention and improved waste management.