Articles | Volume 21, issue 12
Atmos. Chem. Phys., 21, 9859–9886, 2021
https://doi.org/10.5194/acp-21-9859-2021
Atmos. Chem. Phys., 21, 9859–9886, 2021
https://doi.org/10.5194/acp-21-9859-2021

Research article 01 Jul 2021

Research article | 01 Jul 2021

Quantification of solid fuel combustion and aqueous chemistry contributions to secondary organic aerosol during wintertime haze events in Beijing

Yandong Tong et al.

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Quantification of solid fuel combustion and aqueous chemistry contributions to secondary organic aerosol during wintertime haze events in Beijing Yandong Tong, Veronika Pospisilova, Lu Qi, Jing Duan, Yifang Gu, Varun Kumar, Pragati Rai, Giulia Stefenelli, Liwei Wang, Ying Wang, Haobin Zhong, Urs Baltensperger, Junji Cao, Ru-Jin Huang, Andre Stephan Henry Prévôt, and Jay Slowik https://doi.org/10.5281/zenodo.4681762

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Short summary
We investigate SOA sources and formation processes by a field deployment of the EESI-TOF-MS and L-TOF AMS in Beijing in late autumn and early winter. Our study shows that the sources and processes giving rise to haze events in Beijing are variable and seasonally dependent: (1) in the heating season, SOA formation is driven by oxidation of aromatics from solid fuel combustion; and (2) under high-NOx and RH conditions, aqueous-phase chemistry can be a major contributor to SOA formation.
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