| المؤلفون: |
Song X; Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China.; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, China., Yuan B; Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China.; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, China., Wang SH; Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China.; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, China., He XJ; Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China.; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, China., Li XB; Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China.; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, China., Peng YW; Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China.; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, China., Chen YB; Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China.; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, China., Qi JP; Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China.; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, China., Cai JH; Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China.; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, China., Huang S; Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China.; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, China., Hu D; Beijing SDL Technology Co., Ltd., Beijing 102206, China., Wei W; Beijing SDL Technology Co., Ltd., Beijing 102206, China., Liu KX; Dongguan Ecological Environmental Bureau, Dongguan 523009, China., Shao M; Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China.; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, China. |
| مستخلص: |
Volatile organic compounds (VOCs) are key components of tropospheric chemistry, of which industrial emissions are an important source of atmospheric VOCs. In this study, online measurements of 74 VOCs were made in a typical industrial area of the Pearl River Delta in southern China during the early summer of 2021. The mean volume mixing ratio of total volatile organic compounds (TVOC) was (81.9±45.4)×10 -9 during the campaign. Among them, oxygenated volatile organic compounds (OVOCs) accounted for the largest fraction of TVOC, with an average of 51.5%, followed by aromatics, accounting for 19.4% of TVOC. The proportion of OVOCs in TVOC gradually increased with the increase in TVOC concentration. Industry-related emissions were the main contributors to aromatics and OVOCs in this region. Aromatics and OVOCs were the two major contributors to the ozone formation potential (OFP), accounting for 56.4% and 26.7%, respectively. Furthermore, OVOCs also contributed 40.0% of the total ·OH reactivity from VOCs. Xylenes, toluene, acrolein, and ethyl acetate had a greater contribution to the formation of secondary pollution; thus, these species should be given priority for controlling secondary pollution. Our results underscore the severity of OVOCs pollution in industrial areas and the important roles of OVOCs in secondary pollution. |
