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<p>This study aims to study the occurrence, distribution and assessment of degree of MPs contamination using pollution load and environmental stress index of microplastics (MPs) along the beaches of Kanyakumari district, India. The average abundance of MPs in the study area is 1120 ± 318 MPs/kg with an abundant size range of &lt; 0.5&#xa0;mm. Fragments and fibres are the dominant shapes of MPs. White-coloured MPs are abundant, followed by yellow and orange, indicating their secondary origin. One-way ANOVA suggests that there exists a significant relationship between the number of anthropogenic activities carried out on the beach and the MP’s abundance. Polyester (PES), Polyethylene (PE), Polystyrene (PS), Polyvinyl Chloride and acrylonitrile butadiene styrene (ABS) are the most abundant polymer types. Based on the Coefficient of MPs Pollution Impact (CMPI), it is inferred that fragment and fibre-shaped MPs have moderate to maximum impact on the beach environment. The Pollution Load Index (PLI) and Environmental Status Index (ESI) calculation, suggest that the study area is under less load and mediocre stress index category respectively.</p>

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Microplastic Debris in the Beach Sediments of the Kanyakumari Coast, India: Insights on Pollution Load and Environmental Stress Index

  • 期刊论文

  • 发表日期：

    2025年8月7日

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  • Mouttoucomarassamy Sridharan,
  • Harikrishnan Sadanandan,
  • Dharmalingam Senthil Nathan,
  • Gopika Gopakumar,
  • Natarajan Thennaarassan

摘要

This study aims to study the occurrence, distribution and assessment of degree of MPs contamination using pollution load and environmental stress index of microplastics (MPs) along the beaches of Kanyakumari district, India. The average abundance of MPs in the study area is 1120 ± 318 MPs/kg with an abundant size range of < 0.5 mm. Fragments and fibres are the dominant shapes of MPs. White-coloured MPs are abundant, followed by yellow and orange, indicating their secondary origin. One-way ANOVA suggests that there exists a significant relationship between the number of anthropogenic activities carried out on the beach and the MP’s abundance. Polyester (PES), Polyethylene (PE), Polystyrene (PS), Polyvinyl Chloride and acrylonitrile butadiene styrene (ABS) are the most abundant polymer types. Based on the Coefficient of MPs Pollution Impact (CMPI), it is inferred that fragment and fibre-shaped MPs have moderate to maximum impact on the beach environment. The Pollution Load Index (PLI) and Environmental Status Index (ESI) calculation, suggest that the study area is under less load and mediocre stress index category respectively.