Distribution, characterization and contamination risk assessment of microplastics in the sediment from the world's top sediment-laden estuary
Journal of Environmental Management2023
32 citations
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Score: 60
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Bilal Ahamad Paray,
M. Belal Hossain,
M. Belal Hossain,
M. Belal Hossain,
M. Belal Hossain,
M. Belal Hossain,
M. Belal Hossain,
M. Belal Hossain,
Partho Banik,
Partho Banik,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Partho Banik,
Partho Banik,
Bilal Ahamad Paray,
As-Ad Ujjaman Nur,
M. Belal Hossain,
M. Belal Hossain,
M. Belal Hossain,
Partho Banik,
Jimmy C. Yu,
Partho Banik,
Partho Banik,
M. Belal Hossain,
M. Belal Hossain,
M. Belal Hossain,
Partho Banik,
M. Belal Hossain,
M. Belal Hossain,
Jimmy C. Yu,
As-Ad Ujjaman Nur,
As-Ad Ujjaman Nur,
Partho Banik,
As-Ad Ujjaman Nur,
Partho Banik,
As-Ad Ujjaman Nur,
M. Belal Hossain,
Partho Banik,
As-Ad Ujjaman Nur,
Partho Banik,
As-Ad Ujjaman Nur,
Yeasmin Nahar Jolly,
As-Ad Ujjaman Nur,
Bilal Ahamad Paray,
Partho Banik,
Partho Banik,
Partho Banik,
Partho Banik,
Partho Banik,
Partho Banik,
Partho Banik,
Bilal Ahamad Paray,
M. Belal Hossain,
Partho Banik,
As-Ad Ujjaman Nur,
As-Ad Ujjaman Nur,
As-Ad Ujjaman Nur,
Partho Banik,
Partho Banik,
Partho Banik,
Partho Banik,
Partho Banik,
Partho Banik,
Takaomi Arai
Takaomi Arai
Takaomi Arai
Partho Banik,
Partho Banik,
Partho Banik,
Partho Banik,
Partho Banik,
Partho Banik,
Partho Banik,
Partho Banik,
Partho Banik,
Bilal Ahamad Paray,
Yeasmin Nahar Jolly,
Yeasmin Nahar Jolly,
As-Ad Ujjaman Nur,
As-Ad Ujjaman Nur,
As-Ad Ujjaman Nur,
Partho Banik,
As-Ad Ujjaman Nur,
Yeasmin Nahar Jolly,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Md Al- Mamun,
Takaomi Arai
As-Ad Ujjaman Nur,
Md Al- Mamun,
Takaomi Arai
Takaomi Arai
As-Ad Ujjaman Nur,
As-Ad Ujjaman Nur,
Jimmy C. Yu,
Jimmy C. Yu,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
Partho Banik,
Takaomi Arai
Partho Banik,
Takaomi Arai
Jimmy C. Yu,
Yeasmin Nahar Jolly,
Bilal Ahamad Paray,
Takaomi Arai
Takaomi Arai
Bilal Ahamad Paray,
M. Belal Hossain,
Takaomi Arai
Takaomi Arai
Takaomi Arai
Bilal Ahamad Paray,
M. Belal Hossain,
Bilal Ahamad Paray,
Takaomi Arai
Md Al- Mamun,
Takaomi Arai
M. Belal Hossain,
Bilal Ahamad Paray,
M. Belal Hossain,
Jimmy C. Yu,
Jimmy C. Yu,
Takaomi Arai
Takaomi Arai
Takaomi Arai
Jimmy C. Yu,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
M. Belal Hossain,
M. Belal Hossain,
M. Belal Hossain,
Jimmy C. Yu,
Jimmy C. Yu,
Bilal Ahamad Paray,
Bilal Ahamad Paray,
M. Belal Hossain,
Bilal Ahamad Paray,
Md Al- Mamun,
Md Al- Mamun,
Takaomi Arai
Takaomi Arai
Takaomi Arai
Bilal Ahamad Paray,
Bilal Ahamad Paray,
M. Belal Hossain,
M. Belal Hossain,
M. Belal Hossain,
M. Belal Hossain,
Jimmy C. Yu,
M. Belal Hossain,
Takaomi Arai
Takaomi Arai
Takaomi Arai
M. Belal Hossain,
Takaomi Arai
Jimmy C. Yu,
M. Belal Hossain,
Takaomi Arai
Takaomi Arai
Takaomi Arai
M. Belal Hossain,
Takaomi Arai
Summary
This first-of-its-kind study examined microplastic contamination in sediment from the Meghna River estuary in Bangladesh, one of the world's most sediment-laden waterways. Researchers found microplastics at all sampling sites, predominantly fibers and fragments made of polyethylene and polypropylene. The contamination risk assessment indicated moderate to high pollution levels, raising concerns for the aquatic ecosystem and communities that depend on the river.
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.