High enrichment of heavy metals in fine particulate matter through dust aerosol generation

Gao, Qianqian1,2; Zhu, Shengqiang1; Zhou, Kaili1,2; Zhai, Jinghao3; Chen, Shaodong1,2; Wang, Qihuang1,2; Wang, Shurong1; Han, Jin1,2; Lu, Xiaohui1,2; Chen, Hong1; Zhang, Liwu1,2; Wang, Lin1,2; Wang, Zimeng1,2; Yang, Xin3; Ying, Qi4; Zhang, Hongliang1; Chen, Jianmin1,2; Wang, Xiaofei1,2

2023-10-17

10.5194/acp-23-13049-2023

Atmospheric Chemistry and Physics   影响因子和分区

1680-7316

1680-7324

Dust is a major source of atmospheric aerosols. Its chemical composition is often assumed to be similar to the parent soil. However, this assumption has not been rigorously verified. Here, we generated dust aerosols from soils to determine if there is particle-size-dependent selectivity of heavy metals in the dust generation. Mn, Cd, Pb and other heavy metals were found to be highly enriched in fine-dust (PM2.5) aerosols, which can be up to similar to 6.5-fold. To calculate the contributions of dust to atmospheric heavy metals, regional air quality models usually use the dust chemical profiles from the U.S. Environmental Protection Agency's (EPA) SPECIATE database, which does not capture the correct size-dependent selectivity of heavy metals in dust aerosols. Our air quality modeling for China demonstrates that the calculated contribution of fine-dust aerosols to atmospheric heavy metals, as well as their cancer risks, could have significant errors without using proper dust profiles.

SCI

英语

其他

Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences

Environmental Sciences ; Meteorology & Atmospheric Sciences

WOS:001161776900001

COPERNICUS GESELLSCHAFT MBH

GEOSCIENCES

人工提交

1.Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China
2.Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
3.School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
4.Zachry Department of Civil Engineering, Texas A&m University, College Station, 77843, TX, United States

Gao, Qianqian,Zhu, Shengqiang,Zhou, Kaili,et al. High enrichment of heavy metals in fine particulate matter through dust aerosol generation[J]. Atmospheric Chemistry and Physics,2023,23(20).

Gao, Qianqian.,Zhu, Shengqiang.,Zhou, Kaili.,Zhai, Jinghao.,Chen, Shaodong.,...&Wang, Xiaofei.(2023).High enrichment of heavy metals in fine particulate matter through dust aerosol generation.Atmospheric Chemistry and Physics,23(20).

Gao, Qianqian,et al."High enrichment of heavy metals in fine particulate matter through dust aerosol generation".Atmospheric Chemistry and Physics 23.20(2023).