Articles | Volume 23, issue 8
https://doi.org/10.5194/acp-23-4709-2023
https://doi.org/10.5194/acp-23-4709-2023
Measurement report
 | 
20 Apr 2023
Measurement report |  | 20 Apr 2023

Measurement report: Rapid changes of chemical characteristics and health risks for highly time resolved trace elements in PM2.5 in a typical industrial city in response to stringent clean air actions

Rui Li, Yining Gao, Yubao Chen, Meng Peng, Weidong Zhao, Gehui Wang, and Jiming Hao

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Latest update: 21 Jan 2025
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Short summary
A random forest model was used to isolate the effects of emission and meteorology to trace elements in PM2.5 in Tangshan. The results suggested that control measures facilitated decreases of Ga, Co, Pb, Zn, and As, due to the strict implementation of coal-to-gas strategies and optimisation of industrial structure and layout. However, the deweathered levels of Ca, Cr, and Fe only displayed minor decreases, indicating that ferrous metal smelting and vehicle emission controls should be enhanced.
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