Sulfate formation is dominated by manganese-catalyzed oxidation of SO2 on aerosol surfaces during haze events

Weigang Wang; Mingyuan Liu; Tiantian Wang; Yu Song; Li Zhou; Junji Cao; Jingnan Hu; Guigang Tang; Zhe Chen; Zhijie Li; Zhenying Xu; Chao Peng; Chaofan Lian; Yan Chen; Yuepeng Pan; Yunhong Zhang; Yele Sun; Weijun Li; Tong Zhu; Hezhong Tian; Maofa Ge

doi:10.1038/s41467-021-22091-6

Sulfate formation is dominated by manganese-catalyzed oxidation of SO₂ on aerosol surfaces during haze events

Weigang Wang, Mingyuan Liu, Tiantian Wang, Yu Song^*, Li Zhou, Junji Cao, Jingnan Hu, Guigang Tang, Zhe Chen, Zhijie Li, Zhenying Xu, Chao Peng, Chaofan Lian, Yan Chen, Yuepeng Pan, Yunhong Zhang, Yele Sun, Weijun Li, Tong Zhu, Hezhong TianMaofa Ge^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Research output: Contribution to journal › Article › peer-review

188 Citations (Scopus)

Abstract

The formation mechanism of aerosol sulfate during wintertime haze events in China is still largely unknown. As companions, SO₂ and transition metals are mainly emitted from coal combustion. Here, we argue that the transition metal-catalyzed oxidation of SO₂ on aerosol surfaces could be the dominant sulfate formation pathway and investigate this hypothesis by integrating chamber experiments, numerical simulations and in-field observations. Our analysis shows that the contribution of the manganese-catalyzed oxidation of SO₂ on aerosol surfaces is approximately one to two orders of magnitude larger than previously known routes, and contributes 69.2% ± 5.0% of the particulate sulfur production during haze events. This formation pathway could explain the missing source of sulfate and improve the understanding of atmospheric chemistry and climate change.

Original language	English
Article number	1993
Journal	Nature Communications
Volume	12
Issue number	1
DOIs	https://doi.org/10.1038/s41467-021-22091-6
Publication status	Published - 1 Dec 2021

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Wang, W., Liu, M., Wang, T., Song, Y., Zhou, L., Cao, J., Hu, J., Tang, G., Chen, Z., Li, Z., Xu, Z., Peng, C., Lian, C., Chen, Y., Pan, Y., Zhang, Y., Sun, Y., Li, W., Zhu, T., ... Ge, M. (2021). Sulfate formation is dominated by manganese-catalyzed oxidation of SO₂ on aerosol surfaces during haze events. Nature Communications, 12(1), Article 1993. https://doi.org/10.1038/s41467-021-22091-6

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title = "Sulfate formation is dominated by manganese-catalyzed oxidation of SO2 on aerosol surfaces during haze events",

abstract = "The formation mechanism of aerosol sulfate during wintertime haze events in China is still largely unknown. As companions, SO2 and transition metals are mainly emitted from coal combustion. Here, we argue that the transition metal-catalyzed oxidation of SO2 on aerosol surfaces could be the dominant sulfate formation pathway and investigate this hypothesis by integrating chamber experiments, numerical simulations and in-field observations. Our analysis shows that the contribution of the manganese-catalyzed oxidation of SO2 on aerosol surfaces is approximately one to two orders of magnitude larger than previously known routes, and contributes 69.2% ± 5.0% of the particulate sulfur production during haze events. This formation pathway could explain the missing source of sulfate and improve the understanding of atmospheric chemistry and climate change.",

author = "Weigang Wang and Mingyuan Liu and Tiantian Wang and Yu Song and Li Zhou and Junji Cao and Jingnan Hu and Guigang Tang and Zhe Chen and Zhijie Li and Zhenying Xu and Chao Peng and Chaofan Lian and Yan Chen and Yuepeng Pan and Yunhong Zhang and Yele Sun and Weijun Li and Tong Zhu and Hezhong Tian and Maofa Ge",

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doi = "10.1038/s41467-021-22091-6",

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Wang, W, Liu, M, Wang, T, Song, Y, Zhou, L, Cao, J, Hu, J, Tang, G, Chen, Z, Li, Z, Xu, Z, Peng, C, Lian, C, Chen, Y, Pan, Y, Zhang, Y, Sun, Y, Li, W, Zhu, T, Tian, H & Ge, M 2021, 'Sulfate formation is dominated by manganese-catalyzed oxidation of SO₂ on aerosol surfaces during haze events', Nature Communications, vol. 12, no. 1, 1993. https://doi.org/10.1038/s41467-021-22091-6

TY - JOUR

T1 - Sulfate formation is dominated by manganese-catalyzed oxidation of SO2 on aerosol surfaces during haze events

AU - Wang, Weigang

AU - Liu, Mingyuan

AU - Wang, Tiantian

AU - Song, Yu

AU - Zhou, Li

AU - Cao, Junji

AU - Hu, Jingnan

AU - Tang, Guigang

AU - Chen, Zhe

AU - Li, Zhijie

AU - Xu, Zhenying

AU - Peng, Chao

AU - Lian, Chaofan

AU - Chen, Yan

AU - Pan, Yuepeng

AU - Zhang, Yunhong

AU - Sun, Yele

AU - Li, Weijun

AU - Zhu, Tong

AU - Tian, Hezhong

AU - Ge, Maofa

PY - 2021/12/1

Y1 - 2021/12/1

N2 - The formation mechanism of aerosol sulfate during wintertime haze events in China is still largely unknown. As companions, SO2 and transition metals are mainly emitted from coal combustion. Here, we argue that the transition metal-catalyzed oxidation of SO2 on aerosol surfaces could be the dominant sulfate formation pathway and investigate this hypothesis by integrating chamber experiments, numerical simulations and in-field observations. Our analysis shows that the contribution of the manganese-catalyzed oxidation of SO2 on aerosol surfaces is approximately one to two orders of magnitude larger than previously known routes, and contributes 69.2% ± 5.0% of the particulate sulfur production during haze events. This formation pathway could explain the missing source of sulfate and improve the understanding of atmospheric chemistry and climate change.

AB - The formation mechanism of aerosol sulfate during wintertime haze events in China is still largely unknown. As companions, SO2 and transition metals are mainly emitted from coal combustion. Here, we argue that the transition metal-catalyzed oxidation of SO2 on aerosol surfaces could be the dominant sulfate formation pathway and investigate this hypothesis by integrating chamber experiments, numerical simulations and in-field observations. Our analysis shows that the contribution of the manganese-catalyzed oxidation of SO2 on aerosol surfaces is approximately one to two orders of magnitude larger than previously known routes, and contributes 69.2% ± 5.0% of the particulate sulfur production during haze events. This formation pathway could explain the missing source of sulfate and improve the understanding of atmospheric chemistry and climate change.

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DO - 10.1038/s41467-021-22091-6

M3 - Article

C2 - 33790274

AN - SCOPUS:85103745600

SN - 2041-1723

VL - 12

JO - Nature Communications

JF - Nature Communications

IS - 1

M1 - 1993

ER -

Sulfate formation is dominated by manganese-catalyzed oxidation of SO₂ on aerosol surfaces during haze events

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