Articles | Volume 24, issue 23
https://doi.org/10.5194/acp-24-13183-2024
https://doi.org/10.5194/acp-24-13183-2024
Research article
 | 
29 Nov 2024
Research article |  | 29 Nov 2024

Exploring HONO production from particulate nitrate photolysis in representative regions of China: characteristics, influencing factors, and environmental implications

Bowen Li, Jian Gao, Chun Chen, Liang Wen, Yuechong Zhang, Junling Li, Yuzhe Zhang, Xiaohui Du, Kai Zhang, and Jiaqi Wang

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Cited articles

Ammann, M., Kalberer, M., Jost, D. T., Tobler, L., Rössler, E., Piguet, D., Gäggeler, H. W., and Baltensperger, U.: Heterogeneous production of nitrous acid on soot in polluted air masses, Nature, 395, 157–160, https://doi.org/10.1038/25965, 1998. 
Atzei, D., Fermo, P., Vecchi, R., Fantauzzi, M., Comite, V., Valli, G., Cocco, F., and Rossi, A.: Composition and origin of PM2.5 in Mediterranean Countryside, Environ. Pollut., 246, 294–302, https://doi.org/10.1016/j.envpol.2018.12.012, 2019. 
Bao, F., Li, M., Zhang, Y., Chen, C., and Zhao, J.: Photochemical aging of Beijing urban PM2.5 : HONO production, Environ. Sci. Technol., 52, 6309–6316, https://doi.org/10.1021/acs.est.8b00538, 2018. 
Bao, F., Jiang, H., Zhang, Y., Li, M., Ye, C., Wang, W., Ge, M., Chen, C., and Zhao, J.: The key role of sulfate in the photochemical renoxification on real PM2.5, Environ. Sci. Technol., 54, 3121–3128, https://doi.org/10.1021/acs.est.9b06764, 2020. 
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Short summary
The photolysis rate constant of particulate nitrate for HONO production (JNO3–HONO), derived from PM2.5 samples collected at five representative sites in China, exhibited a wide range of variation. A parameterization equation relating JNO3–HONO to OC/NO3 has been established and can be used to estimate JNO3–HONO in different environments. Our work provides an important reference for research in other regions of the world where aerosol samples have a high proportion of organic components.
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