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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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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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ACP | Articles | Volume 20, issue 10
Atmos. Chem. Phys., 20, 5887–5897, 2020
https://doi.org/10.5194/acp-20-5887-2020
Atmos. Chem. Phys., 20, 5887–5897, 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 et al.

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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.
Citation
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Final-revised paper
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