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
School of Geography and Environment, Liaocheng University, Liaocheng 252000, China
Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China
Yachen Wang
School of Geography and Environment, Liaocheng University, Liaocheng 252000, China
Yuanyuan Li
School of Geography and Environment, Liaocheng University, Liaocheng 252000, China
Tonglin Huang
School of Geography and Environment, Liaocheng University, Liaocheng 252000, China
Zhifei Wang
Jinan Environmental Monitoring Center of Shandong Province, Jinan 250101, China
Yiqiu Wang
Liaocheng Environmental Information and Monitoring Center, Liaocheng 252000, China
Min Chen
School of Geography and Environment, Liaocheng University, Liaocheng 252000, China
Zhanfang Hou
School of Geography and Environment, Liaocheng University, Liaocheng 252000, China
Houhua Zhou
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
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.
This study investigated the effect of COVID-19 lockdown (LCD) measures on the formation and...