Abstract:In order to investigate the contamination and potential risks of microplastics in the ice cap of inland lakes, microplastics were sampled during the ice-covered period of the Daihai Lake, Inner Mongolia, northwest. The relationship between microplastics and environmental factors was analyzed by microscopic observation, redundancy analysis and pollutant risk index evaluation. The results showed that the abundance of microplastics in the Daihai ice cap ranged from 283 to 1055n/L, and the main detectable forms and colors were fibrous and black, and the particle size was mainly <0.5mm. Vertically, the abundance of microplastics in the upper and lower ice layers was higher than that in the middle ice layer. The abundance of microplastics was significantly correlated with the concentration of total nitrogen, ammonia nitrogen and salinity, but not with other environmental factors. The risk assessment results showed that the microplastics pollution in the Daihai Lake during the ice-covered period has reached a moderate level, and the potential risk should be taken seriously.
王志超, 窦雅娇, 周鑫, 杨文焕, 姚植, 李卫平. 岱海冰封期微塑料与环境因子的关系及风险评价[J]. 中国环境科学, 2022, 42(2): 889-896.
WANG Zhi-chao, DOU Ya-Jiao, ZHOU Xin, YANG Wen-huan, YAO Zhi, LI Wei-ping. Relationship between microplastics occurrence and environmental factors and risk assessment during ice-covered period of the Daihai Lake. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(2): 889-896.
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