Progress on the occurrence, migration and toxicity of airborne microplastics
ZHOU Shuai1,2,3, LI Wei-xuan1, TANG Zhen-ping2,3, GAO Yuan-yuan2, LIU Ying-jiu1,2
1. School of Civil Engineering, University of South China, Hengyang 421001, China;
2. Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang 421001, China;
3. Hengyang Key Laboratory of Theory and Technology of Nuclear Fuel Geological Cycle, University of South China, Hengyang 421001, China
As emerging environmental contaminants, microplastics (MPs) may cause potential hazard to global ecosphere (including water, soil and air) and human health. Here, we summarize the recent advances on the field of airborne MPs, including the methods of sampling and characterization, patterns of distribution and migration, toxic effects and corresponding mechanisms. To date, the quantitative characterization of airborne MPs mainly depends on stereomicroscopy, and the qualitative analysis of them is mainly conducted by Fourier infrared spectroscopy and Raman spectroscopy. Airborne MPs are widespread in global cities, seas, and even remote mountains. HYSPLIT4 and settling calculations back-trajectory modeling preliminary revealed the transport of airborne MPs. Risk assessment shows that human (especially children) body can inhale abundant airborne MPs. Future research should pay attention to exploit more precise, efficient and economical instruments and methods for airborne MPs, facilitate the standardization of quantitative data, and reveal the toxic effects and corresponding mechanisms of MPs and their absorbed pollutants at the cell, tissue, and organ levels.
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