4.7 Article

Quantitative assessment of microplastic in sandy beaches of Gujarat state, India

Journal

MARINE POLLUTION BULLETIN
Volume 181, Issue -, Pages -

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2022.113925

Keywords

Beach sediments; Fragmentation; Marine pollution; West coast; Plastic pollution; Microplastic contamination

Funding

  1. Government of Gujarat [201901720029]

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This study quantified the prevalence of microplastics on 20 sandy beaches along the Gujarat coast. The results showed variations in microplastic contamination levels among beaches with different anthropogenic pressures, and tourism and fishing activities were identified as the main sources of high microplastic contamination.
The present study was carried out to quantify microplastic prevalence among 20 sandy beaches on the Gujarat coast. Beaches were categorised into three different classes, viz. low-impacted sites, moderately impacted sites, and highly impacted sites based on anthropogenic pressure. Microplastic (MP) (<= 5 mm) contamination on the beaches varied with an average of 1.4 MPs/kg to 26 MPs/kg sediment. Sutrapada site-1 and Porbandar showed the highest and lowest mean abundance of microplastics, respectively, among 20 selected beaches. Out of the total assessed microplastics, threads were the maximum (89.98%), followed by the films (4.75%), fragments (3.36%) and foam (1.89%). In terms of colour and size, different microplastics were recorded in this study. The chemical composition of microplastics was identified by ATR-FTIR as polypropylene (47.5%), polyethylene (26%), and polystyrene (25%). Tourism and fishing activities are the possible sources of higher microplastic contamination at highly impacted sites.

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