College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China.
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China.
Sci Total Environ. 2019 Jun 1;667:427-434. doi: 10.1016/j.scitotenv.2019.02.332. Epub 2019 Feb 27.
Microplastic pollution is an increasingly important environment problem. Many studies show the occurrence of microplastics in our environmental system. However, the freshwater system is less understood, especially in northwest China. We investigated the occurrence and characteristics of microplastics in the Wei River Basin, which is located in northwestern China. The Wei River is the largest tributary of the Yellow River and runs through three major provinces. In the Wei River, the concentration of microplastics in the surface waters varied from 3.67 to 10.7 items /L and in the sediments, the abundance of microplastics varied from 360 to 1320 items/kg. Fiber (50.1%)was the dominant types in water samples and sediments. The small size (<0.5 mm)(68.1%)were the main size of microplastics in Wei River. The types of microplastics were polyethylene, Polyvinyl chloride and polystyrene, as identified using a Fourier transform infrared spectrometer. This study could be a valuable reference for better understanding the microplastics pollution in inland northwestern China.
微塑料污染是一个日益重要的环境问题。许多研究表明微塑料存在于我们的环境系统中。然而，人们对淡水系统的了解较少，特别是在中国西北地区。我们调查了位于中国西北部的渭河流域微塑料的出现和特征。渭河是黄河最大的支流，流经三个主要省份。在渭河中，水面微塑料的浓度从 3.67 到 10.7 个/L 不等，而在沉积物中，微塑料的丰度从 360 到 1320 个/kg 不等。纤维（50.1%）是水样和沉积物中主要的微塑料类型。渭河中微塑料的主要粒径为小粒径（<0.5mm）（68.1%）。使用傅里叶变换红外光谱仪鉴定出微塑料的类型为聚乙烯、聚氯乙烯和聚苯乙烯。这项研究可以为更好地了解中国西北地区内陆的微塑料污染提供有价值的参考。
