摘要

全球海洋环境中的微塑料污染受到了最近的研究关注。然而，淡水环境的微塑料污染尚未得到充分研究，特别是对于中国城市水域的表层沉积物。本研究调查了中国长沙12个选定地点的表层沉积物样本。城市水域表层沉积物中平均微观物质浓度范围为270.17±48.23ite·kg-1~866.59±37.96items·kg-1，跃进湖沉积物中微塑料浓度最高。大多数收集的微塑料是透明的，并且大多数被分类为碎片。所有样品中大多数微塑料（58.31％）小于1mm。拉曼分析表明，聚苯乙烯占沉积物样品的主导地位。该研究为今后中国城市水域表层沉积物微塑料污染研究提供了框架。

Microplastics pollution in the global marine environment has received much recent research attention. However, microplastics contamination of the freshwater environment has not been fully studied, especially with respect to the surface sediments of urban water areas in China. This study investigated surface sediment samples from twelve selected sites in Changsha, China. The average microplastic concentrations in the surface sediments of the urban water areas ranged from 270.17 ± 48.23 items·kg-1 to 866.59 ± 37.96 items·kg-1, and the highest concentration of microplastics was found in Yuejin Lake sediments. Most of the collected microplastics were transparent, and most were classified as fragments. Most microplastics (58.31%) were smaller than 1 mm across all samples. Raman analysis indicated that polystyrene dominated the sediments samples. This study provided framework for future studies of microplastics pollution in the surface sediment of urban water areas in China.

https://www.ncbi.nlm.nih.gov/pubmed/30509825