State Key Laboratory of Severe Weather, Key Laboratory for
Atmospheric Chemistry, Institute of Atmospheric Composition, Chinese Academy
of Meteorological Sciences, Beijing, 100081, China
Department of Atmospheric and Oceanic Sciences, School of Physics,
Peking University, Beijing, China
Chuanyang Shen
Department of Atmospheric and Oceanic Sciences, School of Physics,
Peking University, Beijing, China
Linlin Liang
State Key Laboratory of Severe Weather, Key Laboratory for
Atmospheric Chemistry, Institute of Atmospheric Composition, Chinese Academy
of Meteorological Sciences, Beijing, 100081, China
Gen Zhang
State Key Laboratory of Severe Weather, Key Laboratory for
Atmospheric Chemistry, Institute of Atmospheric Composition, Chinese Academy
of Meteorological Sciences, Beijing, 100081, China
College of Life and Environmental Sciences, Minzu University of
China, Beijing, 100081, China
Xiaobin Xu
State Key Laboratory of Severe Weather, Key Laboratory for
Atmospheric Chemistry, Institute of Atmospheric Composition, Chinese Academy
of Meteorological Sciences, Beijing, 100081, China
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The study of HONO, the primary source of OH radicals, is crucial for atmospheric photochemistry and heterogeneous chemistry. Heterogeneous NO2 conversion was shown to be one of the missing sources of HONO on the North China Plain, but the reaction path is still under debate. In this work, evidence was found that NH3 was the key factor that promoted the hydrolysis of NO2, leading to the explosive growth of HONO and nitrate, suggesting that NH3 emission control measures are urgently needed.
The study of HONO, the primary source of OH radicals, is crucial for atmospheric photochemistry...