Articles | Volume 21, issue 23
Atmos. Chem. Phys., 21, 17995–18010, 2021
https://doi.org/10.5194/acp-21-17995-2021
Atmos. Chem. Phys., 21, 17995–18010, 2021
https://doi.org/10.5194/acp-21-17995-2021
Measurement report
09 Dec 2021
Measurement report | 09 Dec 2021

Measurement report: Fast photochemical production of peroxyacetyl nitrate (PAN) over the rural North China Plain during haze events in autumn

Yulu Qiu et al.

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Latest update: 04 Jul 2022
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Short summary
Photochemical pollution over the North China Plain (NCP) is attracting much concern. Our observations at a rural site in the NCP identified high peroxyacetyl nitrate (PAN) concentrations, even on cold days. Increased acetaldehyde concentration and hydroxyl radical production rates drive fast PAN formation. Moreover, our study emphasizes the importance of formaldehyde photolysis in PAN formation and calls for implementing strict volatile organic compound controls after summer over the NCP.
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