Articles | Volume 20, issue 10
https://doi.org/10.5194/acp-20-5887-2020
https://doi.org/10.5194/acp-20-5887-2020
Research article
 | 
18 May 2020
Research article |  | 18 May 2020

Contribution of hydroxymethanesulfonate (HMS) to severe winter haze in the North China Plain

Tao Ma, Hiroshi Furutani, Fengkui Duan, Takashi Kimoto, Jingkun Jiang, Qiang Zhang, Xiaobin Xu, Ying Wang, Jian Gao, Guannan Geng, Meng Li, Shaojie Song, Yongliang Ma, Fei Che, Jie Wang, Lidan Zhu, Tao Huang, Michisato Toyoda, and Kebin He

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Latest update: 20 Nov 2024
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Short summary
The formation mechanisms of organic matter and sulfate in winter haze in the North China Plain remain unclear. This paper presents the identification and quantification of hydroxymethanesulfonate (HMS) in PM2.5 in Beijing winter and elucidates the heterogeneous HMS chemistry in favorable winter haze conditions. We show that the HMS not only contributes a substantial mass of organic matter, but also leads to an overestimation of sulfate in conventional measurements.
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