Articles | Volume 19, issue 23
Atmos. Chem. Phys., 19, 15117–15129, 2019
https://doi.org/10.5194/acp-19-15117-2019
Atmos. Chem. Phys., 19, 15117–15129, 2019
https://doi.org/10.5194/acp-19-15117-2019

Research article 13 Dec 2019

Research article | 13 Dec 2019

Mechanistic study of the formation of ring-retaining and ring-opening products from the oxidation of aromatic compounds under urban atmospheric conditions

Alexander Zaytsev et al.

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Short summary
Aromatic hydrocarbons contribute significantly to the production of tropospheric ozone and secondary organic aerosol (SOA). Here later-generation low-volatility oxygenated products from toluene and 1,2,4-TMB oxidation by OH are detected in the gas and particle phases. We show that these products, previously identified as highly oxygenated molecules (HOMs), are formed in more than one pathway with differing numbers of reaction steps with OH. They also make up a significant fraction of SOA.
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