Articles | Volume 24, issue 5
https://doi.org/10.5194/acp-24-3079-2024
https://doi.org/10.5194/acp-24-3079-2024
Research article
 | 
11 Mar 2024
Research article |  | 11 Mar 2024

Aqueous-phase chemistry of glyoxal with multifunctional reduced nitrogen compounds: a potential missing route for secondary brown carbon

Yuemeng Ji, Zhang Shi, Wenjian Li, Jiaxin Wang, Qiuju Shi, Yixin Li, Lei Gao, Ruize Ma, Weijun Lu, Lulu Xu, Yanpeng Gao, Guiying Li, and Taicheng An

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Short summary
The formation mechanisms for secondary brown carbon (SBrC) contributed by multifunctional  reduced nitrogen compounds (RNCs) remain unclear. Hence, from combined laboratory experiments and quantum chemical calculations, we investigated the heterogeneous reactions of glyoxal (GL) with multifunctional RNCs, which are driven by four-step indirect nucleophilic addition reactions. Our results show a possible missing source for SBrC formation on urban, regional, and global scales.
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