Effect of microplastics on the release of typical environmental factors during ice melt and the mechanism of action
WANG Zhi-chao1,2, DOU Ya-jiao1,2, KANG Yan-qiu1,2, YANG Wen-huan1,2, JING Shuang-yi1,2, LI Wei-ping1,2
1. School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China; 2. Cooperative Innovation Center of Ecological Protection and Comprehensive Utilization in Inner Mongolia Section of the Yellow River Basin, Baotou 014010, China
Abstract：In order to explore the influence of microplastics on the release rule of typical pollution factors in Daihai during ice melting, indoor simulation method was adopted to explore the release rule of each typical pollution factor during ice melting by setting different freezing conditions (ice body thickness, initial temperature and mode, initial concentration), and the release ratio (E) was used to characterize the release ability of pollution factors during ice melting. The results showed that the occurrence of microplastics and the change of initial conditions can affect the distribution law of pollution factors, and thus affect the initial release amount of pollution factors in the melting process, but cannot change the release law of large initial release of pollution factors, and then a small amount of uniform release of pollution factors. Under the same initial conditions, the occurrence of microplastics increases the release amount of pollution factors at the initial stage of ice melting, and decreases the melt proportion E by 2.59%~5.02%. This indicated that microplastics not only carry some pollution factors into the ice body during freeze-thaw process, but also play a lag role in the release of pollution factors during ice melting process. In addition, the effect of microplastics on the release of pollution factors during the melting process could be explained from two aspects:the microstructure of ice body and the melting mechanism of ice body.
王志超, 窦雅娇, 康延秋, 杨文焕, 敬双怡, 李卫平. 微塑料对融冰过程中典型污染因子释放的影响研究[J]. 中国环境科学, 2023, 43(5): 2480-2488.
WANG Zhi-chao, DOU Ya-jiao, KANG Yan-qiu, YANG Wen-huan, JING Shuang-yi, LI Wei-ping. Effect of microplastics on the release of typical environmental factors during ice melt and the mechanism of action. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(5): 2480-2488.
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