Articles | Volume 20, issue 12
Atmos. Chem. Phys., 20, 7595–7615, 2020
https://doi.org/10.5194/acp-20-7595-2020

Special issue: Multiphase chemistry of secondary aerosol formation under...

Atmos. Chem. Phys., 20, 7595–7615, 2020
https://doi.org/10.5194/acp-20-7595-2020

Research article 01 Jul 2020

Research article | 01 Jul 2020

Characterization of submicron particles by time-of-flight aerosol chemical speciation monitor (ToF-ACSM) during wintertime: aerosol composition, sources, and chemical processes in Guangzhou, China

Junchen Guo et al.

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Latest update: 12 Apr 2021
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Short summary
We characterized non-refractory submicron particulate matter (PM1.0) during winter in Guangzhou, south China. Chemical composition and key sources of ambient PM1.0 are revealed, highlighting the significant role of SOA. The relationship with SOA and peroxy radicals indicated gas-phase oxidation contributed predominantly to SOA formation during non-pollution periods, while heterogeneous/multiphase reactions played more important roles in SOA formation during pollution periods.
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