Microplastics pollution in salt pans from the Maheshkhali Channel, Bangladesh

Rakib, Md Refat Jahan and Al Nahian, Sultan and Alfonso, Maria B. and Khandaker, Mayeen Uddin and Enyoh, Christian Ebere and Hamid, Fauziah Shahul and Alsubaie, Abdullah and Almalki, Abdulraheem S. A. and Bradley, D. A. and Mohafez, Hamidreza and Islam, Mohammad Aminul (2021) Microplastics pollution in salt pans from the Maheshkhali Channel, Bangladesh. Scientific Reports, 11 (1). ISSN 2045-2322, DOI https://doi.org/10.1038/s41598-021-02457-y.

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Microplastics (MP) were recognized as an emergent pollution problem due to their ubiquitous nature and bioaccumulative potential. Those present in salt for consumption could represent a human exposure route through dietary uptake. The current study, conducted in Bangladesh, reports microplastics contamination in coarse salt prepared for human consumption. Sea salt samples were collected from eight representative salt pans located in the country's largest salt farming area, in the Maheshkhali Channel, along the Bay of Bengal. Microplastics were detected in all samples, with mean concentrations ranging from 78 +/- 9.33 to 137 +/- 21.70 particles kg(-1), mostly white and ranging in size from 500-1000 mu m. The prevalent types were: fragments (48%) > films (22%) > fibers (15%) > granules and lines (both 9%). Fourier transform mid-IR and near-IR spectra (FT-MIR-NIR) analysis registered terephthalate (48%), polypropylene (20%), polyethylene (17%), and polystyrene (15%) in all samples. These results contribute to the MP's pollution knowledge in sea salts to understand and reduce this significant human exposure route and environmental pollution source in the future.

Item Type: Article
Funders: TURSP-2020/163
Uncontrolled Keywords: Table salts
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > QD Chemistry
Divisions: Faculty of Science
Depositing User: Ms Zaharah Ramly
Date Deposited: 14 Sep 2022 02:35
Last Modified: 14 Sep 2022 02:35
URI: http://eprints.um.edu.my/id/eprint/34461

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