Atal Centre for Ocean Science and Technology for Islands, National Institute of Ocean Technology, Port Blair 744103, India.
Atal Centre for Ocean Science and Technology for Islands, National Institute of Ocean Technology, Port Blair 744103, India.
Mar Pollut Bull. 2021 Jun;167:112311. doi: 10.1016/j.marpolbul.2021.112311. Epub 2021 Apr 7.
Microplastics (MPs) are widely-recognized contaminants and marine sediments act as a sink of MPs and therefore may cause a potential threat to benthic communities. We aim to analyze the MPs abundances and characteristics in the seafloor sediments from the continental shelves of the Arabian and Andaman seas. Twenty-two seafloor sediments were collected from 8 and 14 locations of the Arabian and Andaman seas, respectively. MPs concentrations varied from not detected (ND) to 267 particles kg with mean values of 128.02 ± 33.92 and 15.36 ± 2.61 particles kg, respectively for the Arabian and Andaman seas. Among different shapes, fiber had the highest distribution over fragments and pellet. FT-IR analysis revealed acrylic was most dominant polymer, followed by polyethylene, and nylon. Mean MP concentration at the Arabian Sea was significantly higher (p < 0.001) than in the Andaman Sea. The present study revealed the wide-spread occurrence of MPs throughout the Indian seas.
微塑料（MPs）是广泛认可的污染物，而海洋沉积物是 MPs 的汇，因此可能对底栖生物群落造成潜在威胁。我们旨在分析阿拉伯海和安达曼海大陆架海底沉积物中的 MPs 丰度和特征。从阿拉伯海和安达曼海的 8 个和 14 个地点分别采集了 22 个海底沉积物样品。MPs 浓度从未检出（ND）到 267 个颗粒/kg 不等，阿拉伯海和安达曼海的平均值分别为 128.02 ± 33.92 和 15.36 ± 2.61 个颗粒/kg。在不同形状中，纤维在碎片和颗粒中的分布最高。FT-IR 分析表明，丙烯腈-丁二烯-苯乙烯共聚物是最主要的聚合物，其次是聚乙烯和尼龙。阿拉伯海的平均 MP 浓度明显高于安达曼海（p < 0.001）。本研究表明 MPs 在整个印度海域广泛存在。
