POTENTIAL ECOLOGICAL RISK ASSESSMENT STUDIES BASED ON SOURCE AND DISTRIBUTION OF MICROPLASTICS FROM THE SURFACE SEDIMENTS OF TROPICAL BACKWATERS, KERALA, INDIA

Total Environment Research Themes Pub Date : 2023-09-01 DOI:10.1016/j.totert.2023.100063

K. Radhakrishnan , S. Krishnakumar , P. Prakasheswar , D. Pradhap , N. Akramkhan , S. Gomathi , M. Krishnaveni , R. Anshu , S.M. Hussain

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Abstract

The aim of this investigation is to comprehend the ecological risk of microplastics in surface sediments of selected estuaries (Kadinamkulam, Anchuthengu and Kappil-Hariharapuram estuaries) along the southwest coast of Kerala, India. The studied tropical estuaries of Kerala found totally 407 microplastic particles in the surface sediments. Among these, 117 MPs found from the Kadinamkulam estuary, 182 MPs found from the Anchuthengu estuary and 108 MPs found from the Kappil-Hariharapuram estuary. The sediments were dominated by colour microplastics followed by white verities (Colour microplastic – Kadinamkulam: 80.34 %, Anchuthengu - Kappil- Hariharapuram: 78 %). The Polymer hazard index (PHI) of the study area reveals that the value of PHI exceeds > 1000 due to the presence of hazard scores polymers such as polystyrene (PS) and polypropylene (PP). The outcome of the PHI and PERI suggest that the estuarine sediments were falling under high ecological risk and these microplastics were primarily derived from river inflow and urbanized areas around the estuarine system.

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基于印度喀拉拉邦热带回水表层沉积物微塑料来源和分布的潜在生态风险评估研究

本次调查的目的是了解印度喀拉拉邦西南海岸选定河口（Kadinamkulam、Anchutengu和Kappil Hariharapuram河口）表层沉积物中微塑料的生态风险。所研究的喀拉拉邦热带河口在表层沉积物中总共发现407个微塑料颗粒。其中，在Kadinamkulam河口发现117名MP，在Anchutengu河口发现182名MP，以及在Kappil Hariharapuram河口发现108名MP。沉积物以彩色微塑料为主，其次为白色固体（彩色微塑料–Kadinamkulam：80.34%，Anchutengu–Kappil–Hariharapuram：78%）。研究区域的聚合物危害指数（PHI）显示，PHI的值超过>；1000，因为存在诸如聚苯乙烯（PS）和聚丙烯（PP）的危险评分聚合物。PHI和PERI的结果表明，河口沉积物正处于高生态风险之下，这些微塑料主要来自河流流入和河口系统周围的城市化区域。

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Total Environment Research Themes

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1.60

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0.00%

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