Characterization of suspended microplastics in surface waters of Chalakudy River, Kerala, India

IF 1.3 4区环境科学与生态学 Q3 ECOLOGY

Chemistry and Ecology Pub Date : 2023-02-13 DOI:10.1080/02757540.2023.2178648

S. K. Maneesh Kumar, A. Kartha, S. Rajathy, C. S. Ratheesh kumar, P. Chandini, P. Vidya, P. K. Madhuraj, K. S. Sajith, S. Anamika

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Abstract

ABSTRACT The investigation focused on identification and quantification of microplastics in surface waters of Chalakudy River, Kerala. Microplastics were detected in the surface waters of the study area with a recovery rate of 108.33 mg particles L−1. The abundance of microplastics ranged from 15.13 ± 4.13 – 170 ± 17.75 particles L−1 (mean: 55.81 ± 34 particles L−1). A maximum number of microplastics were obtained from site C3 and the least from site C8. The weight distribution of microplastic on sites exhibited strong positive correlation with the abundance (r = 0.83). Microplastics of size <20 µm were in higher abundance in the study area. Microscopic examination revealed fragments (47.06%) as predominant plastics and the dominant colour was brown/mud (26.99%). Abundance of coloured plastics indicated the probability of damage to aquatic life. Raman spectrum analysis revealed that Low-Density Poly Ethylene (40%) as the predominant polymer that could be observed at all the sampling sites. Lower-sized microplastics would cause accidental ingestion by organisms. The estimated release of a higher average number of microplastic particles (55.81 ± 4.25) into the marine environment is of serious concern. The observed overall abundance and recovery rate of microplastics in the study area indicated the status of contamination due to a multitude of sources.

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印度喀拉拉邦Chalakudy河地表水中悬浮微塑料的表征

摘要本次调查的重点是喀拉拉邦Chalakudy河地表水中微塑料的识别和定量。在研究区域的地表水中检测到微塑料，回收率为108.33 mg颗粒L−1。微塑料的丰度在15.13之间 ± 4.13 – 170 ± 17.75个颗粒L−1（平均值：55.81 ± 34个颗粒L−1）。从C3位点获得的微塑料数量最多，从C8位点获得的最小。微塑料在位点上的重量分布与丰度（r = 0.83）。尺寸小于20的微塑料 µm在研究区域的丰度较高。显微镜检查显示碎片（47.06%）为主要塑料，主要颜色为棕色/泥状（26.99%）。丰富的彩色塑料表明对水生生物造成损害的可能性。拉曼光谱分析显示，在所有采样点都可以观察到低密度聚乙烯（40%）作为主要聚合物。尺寸较小的微塑料会导致生物体意外摄入。更高平均数量的微塑料颗粒的估计释放量（55.81 ± 4.25）进入海洋环境引起严重关注。在研究区域观察到的微塑料的总体丰度和回收率表明了多种来源造成的污染状况。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemistry and Ecology 环境科学-环境科学

CiteScore

4.20

自引率

16.00%

发文量

审稿时长

3.7 months

期刊介绍： Chemistry and Ecology publishes original articles, short notes and occasional reviews on the relationship between chemistry and ecological processes. This journal reflects how chemical form and state, as well as other basic properties, are critical in their influence on biological systems and that understanding of the routes and dynamics of the transfer of materials through atmospheric, terrestrial and aquatic systems, and the associated effects, calls for an integrated treatment. Chemistry and Ecology will help promote the ecological assessment of a changing chemical environment and in the development of a better understanding of ecological functions.