Articles | Volume 19, issue 16
Atmos. Chem. Phys., 19, 10557–10570, 2019
https://doi.org/10.5194/acp-19-10557-2019

Special issue: Multiphase chemistry of secondary aerosol formation under...

Atmos. Chem. Phys., 19, 10557–10570, 2019
https://doi.org/10.5194/acp-19-10557-2019

Research article 21 Aug 2019

Research article | 21 Aug 2019

NH3-promoted hydrolysis of NO2 induces explosive growth in HONO

Wanyun Xu et al.

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Latest update: 04 Dec 2021
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Short summary
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.
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