Distribution Characteristics of Atmospheric Microplastics in Typical Desert Agricultural Regions.

Autor:	Du A; College of Mechanical and Electronic Engineering, Tarim University, Alaer, China.; Xinjiang Production and Construction Corps Key Laboratory of Utilization and Equipment of Special Agricultural and Forestry Products in Southern Xinjiang, Alaer, China.; Department of Xinjiang Uygur Autonomous Region, Modern Agricultural Engineering Key Laboratory at Universities of Education, Alaer, China., Zhao Y; College of Mechanical and Electronic Engineering, Tarim University, Alaer, China.; Xinjiang Production and Construction Corps Key Laboratory of Utilization and Equipment of Special Agricultural and Forestry Products in Southern Xinjiang, Alaer, China.; Department of Xinjiang Uygur Autonomous Region, Modern Agricultural Engineering Key Laboratory at Universities of Education, Alaer, China., Hu C; College of Mechanical and Electronic Engineering, Tarim University, Alaer, China.; Xinjiang Production and Construction Corps Key Laboratory of Utilization and Equipment of Special Agricultural and Forestry Products in Southern Xinjiang, Alaer, China.; Department of Xinjiang Uygur Autonomous Region, Modern Agricultural Engineering Key Laboratory at Universities of Education, Alaer, China., Wang X; College of Mechanical and Electronic Engineering, Tarim University, Alaer, China.; Xinjiang Production and Construction Corps Key Laboratory of Utilization and Equipment of Special Agricultural and Forestry Products in Southern Xinjiang, Alaer, China.; Department of Xinjiang Uygur Autonomous Region, Modern Agricultural Engineering Key Laboratory at Universities of Education, Alaer, China., Cheng H; College of Mechanical and Electronic Engineering, Tarim University, Alaer, China.; Xinjiang Production and Construction Corps Key Laboratory of Utilization and Equipment of Special Agricultural and Forestry Products in Southern Xinjiang, Alaer, China.; Department of Xinjiang Uygur Autonomous Region, Modern Agricultural Engineering Key Laboratory at Universities of Education, Alaer, China., Xia W; College of Mechanical and Electronic Engineering, Tarim University, Alaer, China.; Xinjiang Production and Construction Corps Key Laboratory of Utilization and Equipment of Special Agricultural and Forestry Products in Southern Xinjiang, Alaer, China.; Department of Xinjiang Uygur Autonomous Region, Modern Agricultural Engineering Key Laboratory at Universities of Education, Alaer, China., Wang L; College of Mechanical and Electronic Engineering, Tarim University, Alaer, China.; Xinjiang Production and Construction Corps Key Laboratory of Utilization and Equipment of Special Agricultural and Forestry Products in Southern Xinjiang, Alaer, China.; Department of Xinjiang Uygur Autonomous Region, Modern Agricultural Engineering Key Laboratory at Universities of Education, Alaer, China., Xing J; College of Mechanical and Electronic Engineering, Tarim University, Alaer, China.; Xinjiang Production and Construction Corps Key Laboratory of Utilization and Equipment of Special Agricultural and Forestry Products in Southern Xinjiang, Alaer, China.; Department of Xinjiang Uygur Autonomous Region, Modern Agricultural Engineering Key Laboratory at Universities of Education, Alaer, China.
Jazyk:	angličtina
Zdroj:	Environmental toxicology and chemistry [Environ Toxicol Chem] 2024 Sep; Vol. 43 (9), pp. 1982-1995. Date of Electronic Publication: 2024 Jul 09.
DOI:	10.1002/etc.5951
Abstrakt:	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 μm. 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/m 2 /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;43:1982-1995. © 2024 SETAC. (© 2024 SETAC.)
Databáze:	MEDLINE
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