Articles | Volume 16, issue 2
Atmos. Chem. Phys., 16, 675–689, 2016
https://doi.org/10.5194/acp-16-675-2016
Atmos. Chem. Phys., 16, 675–689, 2016
https://doi.org/10.5194/acp-16-675-2016

Research article 21 Jan 2016

Research article | 21 Jan 2016

Formation of secondary aerosols from gasoline vehicle exhaust when mixing with SO2

T. Liu et al.

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Short summary
The formation of SOA and sulfate aerosols from the photooxidation of gasoline vehicle exhaust (GVE) when mixing with SO2 was investigated in a smog chamber. We found that the presence of GVE enhanced the conversion of SO2 to sulfate predominantly through reactions with stabilized Criegee intermediates. On the other hand, the elevated particle acidity enhanced the SOA production from GVE. This study indicated that SO2 and GVE could enhance each other in forming secondary aerosols.
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