Light absorption properties and composition of water-soluble brown carbon in North China Plain: implication for an enhancing role of  nitrogenous organic compounds

Wu, Can; Zhang, Huijun; Sun, Kehan; Li, Rongjie; Yan, Ziting; Chen, Yubao; Li, Zheng; Xiao, Binyu; Ren, Yanqin; Wang, Gehui

doi:10.5194/acp-26-14229-2026

Articles | Volume 26, issue 19

https://doi.org/10.5194/acp-26-14229-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-26-14229-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 26, issue 19

Research article

|

09 Oct 2026

Research article |

| 09 Oct 2026

Light absorption properties and composition of water-soluble brown carbon in North China Plain: implication for an enhancing role of nitrogenous organic compounds

Can Wu, Huijun Zhang, Kehan Sun, Rongjie Li, Ziting Yan, Yubao Chen, Zheng Li, Binyu Xiao, Yanqin Ren, and Gehui Wang

Supplement

https://doi.org/10.5194/acp-26-14229-2026-supplement

Data sets

Simultaneous observation of brown carbon at five sites across the North China Plain Can Wu https://doi.org/10.5281/zenodo.17947347

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Short summary

Nitrogenous organic compounds represent the pivotal chromophores governing the optical properties of atmospheric brown carbon (BrC) across the North China Plain, which are mainly formed through ammonia-driven aqueous reactions. Accordingly, the mitigation of ammonia emissions is indispensable for the further abatement of haze and BrC pollution in this region.