Microplastic Emission from Soil-Air Interface

Yang, Shanye1,2; Lu, Xiaohui1,2; Peng, Yifeng3; Wang, Zimeng1; Yang, Xin1,2,4; Wang, Xiaofei1,2,5

2024-04-01

10.1021/acs.estlett.4c00189

ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS   影响因子和分区

2328-8930

To bridge the gap in understanding soil-air microplastic emissions, here we studied the soil-air transfer mechanism of microplastics with laboratory simulations using microplastic particles varying in size from 1 to 5000 mu m. Our findings indicate that the size and shape of the microplastics together with the soil type and moisture levels are major determinants of the microplastic enrichment ratio (ER) in dust, overshadowing the role of polymer types. Notably, microplastic pellets larger than 20 mu m do not enrich in dust, while microplastic fibers, even those as large as 500-5000 mu m in length, do enrich in dust. Based on our ER measurement, the global microplastic size distribution in soil and dust aerosol production flux, we made a preliminary bottom-up assessment of global soil microplastic emissions of 48[0.4-1217] kilotons/year. Our pioneering findings on the global atmospheric soil-air microplastic flux provide insights that could guide the future development of a more precise microplastic emission inventory.

microplastic soil-air dust aerosol enrichment ratio emission flux

SCI ; EI

英语

其他

Natural Science Foundation of Shanghai Municipality["42377090","42077193"] ; National Natural Science Foundation of China[23ZR1479700] ; Shanghai Natural Science Foundation["2022YFC3702600","2022YFC3702601"]

Engineering ; Environmental Sciences & Ecology

Engineering, Environmental ; Environmental Sciences

WOS:001202383000001

AMER CHEMICAL SOC

Web of Science

1.Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Preve, Shanghai 200433, Peoples R China
2.Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China
3.Lanzhou Univ, Coll Atmospher Sci, Lanzhou 730000, Peoples R China
4.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
5.Fudan Zhangjiang Inst, Shanghai 201203, Peoples R China

Yang, Shanye,Lu, Xiaohui,Peng, Yifeng,et al. Microplastic Emission from Soil-Air Interface[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS,2024.

Yang, Shanye,Lu, Xiaohui,Peng, Yifeng,Wang, Zimeng,Yang, Xin,&Wang, Xiaofei.(2024).Microplastic Emission from Soil-Air Interface.ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS.

Yang, Shanye,et al."Microplastic Emission from Soil-Air Interface".ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS (2024).