Measurement Report: Investigation on the sources and formation processes of dicarboxylic acids and related species in urban aerosols before and during the COVID-19 lockdown in Jinan, East China

Meng, Jingjing; Wang, Yachen; Li, Yuanyuan; Huang, Tonglin; Wang, Zhifei; Wang, Yiqiu; Chen, Min; Hou, Zhanfang; Zhou, Houhua; Lu, Keding; Kawamura, Kimitaka; Fu, Pingqing

doi:https://doi.org/10.5194/acp-23-14481-2023

Articles | Volume 23, issue 22

https://doi.org/10.5194/acp-23-14481-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-23-14481-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 22

Measurement report

|

24 Nov 2023

Measurement report |

| 24 Nov 2023

Measurement Report: Investigation on the sources and formation processes of dicarboxylic acids and related species in urban aerosols before and during the COVID-19 lockdown in Jinan, East China

Jingjing Meng, Yachen Wang, Yuanyuan Li, Tonglin Huang, Zhifei Wang, Yiqiu Wang, Min Chen, Zhanfang Hou, Houhua Zhou, Keding Lu, Kimitaka Kawamura, and Pingqing Fu

Supplement

https://doi.org/10.5194/acp-23-14481-2023-supplement

Data sets

Enhanced contribution of photooxidation to dicarboxylic acids in urban aerosols during the COVID-19 lockdown in Jinan, East China Jingjing Meng https://doi.org/10.5281/zenodo.7533247

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Short summary

This study investigated the effect of COVID-19 lockdown (LCD) measures on the formation and evolutionary process of diacids and related compounds from field observations. Results demonstrate that more aged organic aerosols are observed during the LCD due to the enhanced photochemical oxidation. Our study also found that the reactivity of ¹³C was higher than that of ¹²C in the gaseous photochemical oxidation, leading to higher δ¹³C values of C₂ during the LCD than before the LCD.