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    Risk assessments of microplastics accumulated in estuarine sediments at Cuddalore, Tamil Nadu, southeast coast of India

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    Date
    2023
    Author
    Nithin, Ajith
    Sundaramanickam, A.
    Saha, M.
    Hassanshahian, M.
    Thangaraj, M.
    Rathore, Chayanika
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    Abstract
    In this study, the abundance of microplastics (MPs) in the Uppanar and Gadilam estuaries in Cuddalore, on the southeast coast of India, is reported. In the estuarine sediments, MP abundance ranged from 36.3 ± 3.39 to 51.6 ± 2.05 particles/Kg dw. Different types of MP shapes, such as fibers (41.7–47.9%), films (21.2–27.2%), and fragments (18.3–25.5%) were observed in the size range of 100–1000 µm. Diverse colours of MPs were observed, among which red (30.1–34.5%) was predominantly noticed in the estuarine sediments. Six polymers were identified by µ-FTIR, among which LDPE (39%) and PP (35%) were dominant. MPs pollution in these estuaries is composed of domestic, industrial, and fishing wastes. Risk assessments show that the area falls under hazard categories I to III, indicating low to high risk. This study improves knowledge on MPs contamination in Uppanar and Gadilam estuaries and provides impetus for further research to identify the actual sources and impacts of MPs on aquatic systems along the east coast of India
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    https://doi.org/10.1007/S10661-023-11434-Z
    http://drs.nio.res.in/drs/handle/2264/9087
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