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Purpose <p>This study aimed to investigate the presence, morpho-polymer characteristics, and potential ecological impacts of microplastics (MPs) in sediment samples from two popular tourist beaches along the northern Bay of Bengal. MP contamination is a rising issue in Bangladesh coastal waters, given its dense population, extensive plastic manufacturing, and a lack of waste processing facilities.</p> Materials and methods <p>Sediment samples were collected from two tourist beaches. Microplastics were identified, quantified, and categorized by type, size, shape, and color. Statistical analyses were performed to compare microplastic abundance between the two sites. Polymer composition was analyzed using Fourier-transform infrared spectroscopy (FTIR). Multivariate analyses were used to identify potential sources of contamination.</p> Results and discussion <p>Microplastic abundance ranged from 55.83 ± 10.10 to 116.67 ± 11.27 items kg⁻¹ at Patenga beach and 60.00 ± 6.61 to 135.83 ± 12.58 items kg⁻¹ at Parki beach. Fibers dominated Patenga beach (68.71%), while foam was prevalent at Parki beach (48.97%). Most microplastics were &lt; 0.5&#xa0;mm, filamentous, and transparent (Patenga) or white (Parki). Polyethylene (33.33%) was the most common polymer. Morpho-polymer characteristics and statistical analyses indicated the sources of MPs were linked to tourism, industrial waste, river discharge, and fishing activities.</p> Conclusions <p>This study revealed moderate microplastic pollution at the study beaches, offering baseline data for the northeastern Bay of Bengal. The findings highlighted that targeted waste management policies are urgently needed to reduce coastal microplastic contamination.</p>

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The distribution, characteristics, and potential impacts of microplastics in sediments from two tourist beaches along the northern Bay of Bengal

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年6月6日

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  • Md. Tareque Bhuiyan,
  • Md. Mofizur Rahman,
  • Md. Maheen Mahmud Bappy,
  • Partho Banik,
  • As-Ad Ujjaman Nur,
  • Jimmy Yu,
  • Takaomi Arai,
  • Bilal Ahamad Paray,
  • M. Belal Hossain

摘要

Purpose

This study aimed to investigate the presence, morpho-polymer characteristics, and potential ecological impacts of microplastics (MPs) in sediment samples from two popular tourist beaches along the northern Bay of Bengal. MP contamination is a rising issue in Bangladesh coastal waters, given its dense population, extensive plastic manufacturing, and a lack of waste processing facilities.

Materials and methods

Sediment samples were collected from two tourist beaches. Microplastics were identified, quantified, and categorized by type, size, shape, and color. Statistical analyses were performed to compare microplastic abundance between the two sites. Polymer composition was analyzed using Fourier-transform infrared spectroscopy (FTIR). Multivariate analyses were used to identify potential sources of contamination.

Results and discussion

Microplastic abundance ranged from 55.83 ± 10.10 to 116.67 ± 11.27 items kg⁻¹ at Patenga beach and 60.00 ± 6.61 to 135.83 ± 12.58 items kg⁻¹ at Parki beach. Fibers dominated Patenga beach (68.71%), while foam was prevalent at Parki beach (48.97%). Most microplastics were < 0.5 mm, filamentous, and transparent (Patenga) or white (Parki). Polyethylene (33.33%) was the most common polymer. Morpho-polymer characteristics and statistical analyses indicated the sources of MPs were linked to tourism, industrial waste, river discharge, and fishing activities.

Conclusions

This study revealed moderate microplastic pollution at the study beaches, offering baseline data for the northeastern Bay of Bengal. The findings highlighted that targeted waste management policies are urgently needed to reduce coastal microplastic contamination.