Articles | Volume 16, issue 4
https://doi.org/10.5194/acp-16-2255-2016
https://doi.org/10.5194/acp-16-2255-2016
Research article
 | 
26 Feb 2016
Research article |  | 26 Feb 2016

Role of methyl group number on SOA formation from monocyclic aromatic hydrocarbons photooxidation under low-NOx conditions

L. Li, P. Tang, S. Nakao, C.-L. Chen, and D. R. Cocker III

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by David Cocker on behalf of the Authors (07 Jan 2016)  Author's response   Manuscript 
ED: Publish as is (13 Jan 2016) by John Liggio
AR by David Cocker on behalf of the Authors (16 Jan 2016)
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Short summary
Substitution of methyl groups onto the aromatic ring determines the SOA formation from the aromatic hydrocarbon precursor. This study links the number of methyl groups on the aromatic ring to SOA formation from aromatic hydrocarbons photooxidation under low-NOx conditions (HC / NO > 10 ppbC : ppb). Aromatics are determined to be less oxidized per mass/carbon as the number of methyl groups on aromatic ring increases based on SOA yield, SOA chemical composition and SOA physical characteristics.
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