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Smog Chamber Study on the Role of NOx in SOA and O-3 Formation from Aromatic Hydrocarbons
Chen, Tianzeng; Zhang, Peng; Ma, Qingxin; Chu, Biwu; Liu, Jun; Ge, Yanli; He, Hong
2022-09-20
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Issue0Pages:1-10
AbstractChina is facing dual pressures to reduce both PM(2.5 )and O(3 )pollution, the crucial precursors of which are NOx and VOCs. In our study, the role of NOx in both secondary organic aerosol (SOA, the important constituent of PM2.5) and O(3 )formation was examined in our 30 m(3 )indoor smog chamber. As revealed in the present study, the NOx level can obviously affect the OH concentration and volatility distribution of gas-phase oxidation products and thus O(3 )and SOA formation. Reducing the NOx concentration to the NOx-sensitive regime can inhibit O(3 )formation (by 42%), resulting in the reduction of oxidation capacity, which suppresses the SOA formation (by 45%) by inhibiting the formation of O-and N-containing gas-phase oxidation products with low volatility. The contribution of these oxidation products to the formation of SOA was also estimated, and the results could substantially support the trend of SOA yield with NOx at different VOC levels. The atmospheric implications of NOx in the coordinated control of PM2.5 and O(3 )are also discussed.
Department大气环境与污染控制实验室 ; 大气环境与污染控制实验室
KeywordSECONDARY ORGANIC AEROSOL ALPHA-PINENE M-XYLENE OZONE PRODUCTION PHOTOOXIDATION EMISSIONS POLLUTION CHEMISTRY OXIDATION TOLUENE
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/47427
Collection大气环境与污染控制实验室
Corresponding AuthorHe, Hong
Affiliation1.Chinese Acad Sci, State Key Joint Lab Environm Simulation & Pollutio, Research Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
2.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Regional Atmospher Environm, Xiamen 361021, Peoples R China
3.Univ Chinese AcadSci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Chen, Tianzeng,Zhang, Peng,Ma, Qingxin,et al. Smog Chamber Study on the Role of NOx in SOA and O-3 Formation from Aromatic Hydrocarbons[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2022(0):1-10.
APA Chen, Tianzeng.,Zhang, Peng.,Ma, Qingxin.,Chu, Biwu.,Liu, Jun.,...&He, Hong.(2022).Smog Chamber Study on the Role of NOx in SOA and O-3 Formation from Aromatic Hydrocarbons.ENVIRONMENTAL SCIENCE & TECHNOLOGY(0),1-10.
MLA Chen, Tianzeng,et al."Smog Chamber Study on the Role of NOx in SOA and O-3 Formation from Aromatic Hydrocarbons".ENVIRONMENTAL SCIENCE & TECHNOLOGY .0(2022):1-10.
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