气候变化领域集成服务门户(CCPortal): Effects of OH radical and SO2 concentrations on photochemical reactions of mixed anthropogenic organic gases

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DOI	10.5194/acp-22-10489-2022
	Effects of OH radical and SO2 concentrations on photochemical reactions of mixed anthropogenic organic gases
	Li, Junling; Li, Kun; Zhang, Hao; Zhang, Xin; Ji, Yuanyuan; Chu, Wanghui; Kong, Yuxue; Chu, Yangxi; Ren, Yanqin; Zhang, Yujie; Zhang, Haijie; Gao, Rui; Wu, Zhenhai; Bi, Fang; Chen, Xuan; Wang, Xuezhong; Wang, Weigang; Li, Hong; Ge, Maofa
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	10489
结束页码	10504
卷号	22 期号:16 页码:16
英文摘要	Vehicle exhaust, as a major source of air pollutants in urban areas, contains a complex mixture of organic vapours including long-chain alkanes and aromatic hydrocarbons. The atmospheric oxidation of vehicle emissions is a highly complex system as inorganic gases (e.g. NO, and SO2) from other urban sources coexist and therefore remains poorly understood. In this work, the photooxidation of n-dodecane, 1,3,5-trimethylbenzene, and their mixture is studied in the presence of NOx and SO2 to mimic the atmospheric oxidation of urban vehicle emissions (including diesel and gasoline vehicles), and the formation of ozone and secondary aerosols is investigated. It is found that ozone formation is enhanced by higher OH concentration and higher temperature, but is influenced little by SO2 concentration. However, SO2 can largely enhance the particle formation in both number and mass concentrations, likely due to the promoted new particle formation and acid-catalysed heterogeneous reactions from the formation of sulfuric acid. In addition, organo-sulfates and organo-nitrates are detected in the formed particles, and the presence of SO2 can promote the formation of organo-sulfates. These results provide a scientific basis for systematically evaluating the effects of SO2, OH concentration, and temperature on the oxidation of mixed organic gases in the atmosphere that produce ozone and secondary particles.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000841867100001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273678
作者单位	Chinese Research Academy of Environmental Sciences; Swiss Federal Institutes of Technology Domain; Paul Scherrer Institute; Shandong University; Chinese Academy of Sciences; Institute of Chemistry, CAS
推荐引用方式 GB/T 7714	Li, Junling,Li, Kun,Zhang, Hao,et al. Effects of OH radical and SO2 concentrations on photochemical reactions of mixed anthropogenic organic gases[J],2022,22(16):16.
APA	Li, Junling.,Li, Kun.,Zhang, Hao.,Zhang, Xin.,Ji, Yuanyuan.,...&Ge, Maofa.(2022).Effects of OH radical and SO2 concentrations on photochemical reactions of mixed anthropogenic organic gases.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(16),16.
MLA	Li, Junling,et al."Effects of OH radical and SO2 concentrations on photochemical reactions of mixed anthropogenic organic gases".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.16(2022):16.