Distribution Characteristics of Atmospheric Microplastics in Typical Desert Agricultural Regions

被引：4

作者：

Du, Ao ^{[1
,2
,3
]}

Zhao, Yachuan ^{[1
,2
,3
]}

Hu, Can ^{[1
,2
,3
]}

Wang, Xufeng ^{[1
,2
,3
]}

Cheng, Hui ^{[1
,2
,3
]}

Xia, Wenhao ^{[1
,2
,3
]}

Wang, Long ^{[1
,2
,3
]}

Xing, Jianfei ^{[1
,2
,3
]}

机构：

[1] Tarim Univ, Coll Mech & Elect Engn, Alaer, Peoples R China

[2] Xinjiang Prod & Construct Corps Key Lab Utilizat &, Alaer, Peoples R China

[3] Dept Xinjiang Uygur Autonomous Reg, Modern Agr Engn Key Lab Univ Educ, Alaer, Peoples R China

来源：

ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY | 2024年 / 43卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Atmospheric distribution; Deposition flux; Desert agricultural regions; Microplastics; Particle size distribution; Particulate matter; POLLUTION; ENVIRONMENT; DUST;

D O I：

10.1002/etc.5951

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We examined the distribution characteristics of atmospheric microplastics in typical desert agricultural regions, with a focus on the agricultural areas surrounding the Taklamakan Desert, Xinjiang, China. We collected samples of total suspended particulate matter (TSP), atmospheric deposition, and atmospheric dust using both active and passive collection methods. The chemical composition, particle size, shape, and color of atmospheric microplastics were examined using a stereomicroscope and a Fourier-transform infrared spectrometer to analyze their characteristics. The results showed that the primary chemical compositions of microplastics included polypropylene (PP), polyethylene, polyethylene terephthalate, polymethylmethacrylate, and cellophane. Particle sizes were mainly within the range of 0 to 1000 mu m. Fibrous microplastics constituted the majority of the TSP and atmospheric deposition, whereas film-like microplastics constituted the largest proportion of atmospheric dustfall. The deposition flux of atmospheric microplastics in the first quarter was measured at 103.21 +/- 22.12 particles/m2/day, which was lower than that observed in conventional agricultural areas. The abundance of microplastics in atmospheric dustfall was found to be 1.36 particles/g. The proportion of PP microplastics in atmospheric dustfall can be as high as 35%. Through a comparison of microplastic content in TSP during dust storms and under normal weather conditions, it was found that dust storms can lead to an increase in the abundance of microplastics within the atmospheric TSP. The present study provides a scientific basis for understanding the distribution of atmospheric microplastics in typical desert agricultural regions. Environ Toxicol Chem 2024;00:1-14. (c) 2024 SETAC.

引用

页码：1982 / 1995

页数：14

共 52 条

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