Articles | Volume 19, issue 11
https://doi.org/10.5194/acp-19-7649-2019
https://doi.org/10.5194/acp-19-7649-2019
Research article
 | 
07 Jun 2019
Research article |  | 07 Jun 2019

The formation of nitro-aromatic compounds under high NOx and anthropogenic VOC conditions in urban Beijing, China

Yujue Wang, Min Hu, Yuchen Wang, Jing Zheng, Dongjie Shang, Yudong Yang, Ying Liu, Xiao Li, Rongzhi Tang, Wenfei Zhu, Zhuofei Du, Yusheng Wu, Song Guo, Zhijun Wu, Shengrong Lou, Mattias Hallquist, and Jian Zhen Yu

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Latest update: 22 Jul 2024
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Short summary
Nitro-aromatic compounds (NACs), an important fraction in brown carbon, were comprehensively characterized in Beijing. The oxidation of anthropogenic VOCs represented more dominant sources of NACs than biomass burning. A transition of NO2 from low- to high-NOx regimes was observed. The contribution of aqueous-phase pathways to NAC formation increased at elevated RH. This work highlights secondary formation of NACs and influence factors in high NOx–anthropogenic VOC-dominated urban atmospheres.
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