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HONO Budget and Its Role in Nitrate Formation in the Rural North China Plain
Xue, Chaoyang; Zhang, Chenglong; Ye, Can; Liu, Pengfei; Catoire, Valery; Krysztofiak, Gisele; Chen, Hui; Ren, Yangang; Zhao, Xiaoxi; Wang, Jinhe; Zhang, Fei; Zhang, Chongxu; Zhang, Jingwei; An, Junling; Wang, Tao; Chen, Jianmin; Kleffmann, Joerg; Mellouki, Abdelwahid; Mu, Yujing
2020-09-15
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume54Issue:18Pages:11048-11057
AbstractNitrous acid (HONO) is a major precursor of tropospheric hydroxyl radical (OH) that accelerates the formation of secondary pollutants. The HONO sources, however, are not well understood, especially in polluted areas. Based on a comprehensive winter field campaign conducted at a rural site of the North China Plain, a box model (MCM v3.3.1) was used to simulate the daytime HONO budget and nitrate formation. We found that HONO photolysis acted as the dominant source for primary OH with a contribution of more than 92%. The observed daytime HONO could be well explained by the known sources in the model. The heterogeneous conversion of NO2 on ground surfaces and the homogeneous reaction of NO with OH were the dominant HONO sources with contributions of more than 36 and 34% to daytime HONO, respectively. The contribution from the photolysis of particle nitrate and the reactions of NO2 on aerosol surfaces was found to be negligible in clean periods (2%) and slightly higher during polluted periods (8%). The relatively high OH levels due to fast HONO photolysis at the rural site remarkably accelerated gas-phase reactions, resulting in the fast formation of nitrate as well as other secondary pollutants in the daytime.
Department大气环境与污染控制实验室
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/44546
Collection大气环境与污染控制实验室
Recommended Citation
GB/T 7714
Xue, Chaoyang,Zhang, Chenglong,Ye, Can,et al. HONO Budget and Its Role in Nitrate Formation in the Rural North China Plain[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2020,54(18):11048-11057.
APA Xue, Chaoyang.,Zhang, Chenglong.,Ye, Can.,Liu, Pengfei.,Catoire, Valery.,...&Mu, Yujing.(2020).HONO Budget and Its Role in Nitrate Formation in the Rural North China Plain.ENVIRONMENTAL SCIENCE & TECHNOLOGY,54(18),11048-11057.
MLA Xue, Chaoyang,et al."HONO Budget and Its Role in Nitrate Formation in the Rural North China Plain".ENVIRONMENTAL SCIENCE & TECHNOLOGY 54.18(2020):11048-11057.
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