Seasonal variation and risk assessment of microplastics in surface water of the Manas River Basin, China

Ecotoxicology and Environmental Safety

Wanjie Li¹  Jianying Ning²  Gaoliang Wang³  Zilong Liu³  Nuerguli Xiayihazi³  Jianjiang Lu³  Hongjuan Zhou³  Yanbin Tong³  Li Zhou⁴ 

[1] Corresponding author.;Environmental Monitoring Station of the First Division of Xinjiang Production and Construction Corps, Alaer 843300, China;Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China;The First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832002, China;

关键词: Microplastics;    Seasonal variation;    Surface water;    Polymer;    Risk assessment;   

DOI  :  

来源: DOAJ

【 摘 要 】

The ubiquity of microplastics in the environment has caused great influence to ecosystems and seriously threatened human health. To better understand the variation in microplastics in different seasons in an inland freshwater environment and determine the sources of microplastic pollution and its migration features, this study investigated the characteristics of microplastic pollution during dry (April) and wet (July) seasons in surface water of the Manas River Basin, China. The size, color, shape, area distribution and compound composition of microplastics were studied. Moreover, the risk of microplastic contamination was explored based on risk assessment models. The results demonstrated that the degree of pollution caused by microplastic abundance was minor in this study area. The average abundance of microplastics in April (17 ± 4 items/L) was higher than that in July (14 ± 2 items/L). The range in the abundance of microplastics in April and July were 22 ± 5–14 ± 3 items/L and 19 ± 2–10 ± 1 items/L, respectively. Highly hazardous polymers such as Polyvinyl chloride (PVC) and Polycarbonate (PC) have a significant impact on the results of the evaluation of the presence of microplastics. This study is an important reference for understanding the characteristics of the seasonal variation in microplastics in inland freshwater environments and has practical significance, as it will allow relevant agencies to accurately assess the pollution level of microplastics in different seasons. It is of practical significance to understand the sources and sinks of microplastics in inland freshwater environment.

【 授权许可】

Unknown