Articles | Volume 19, issue 11
Atmos. Chem. Phys., 19, 7609–7625, 2019
https://doi.org/10.5194/acp-19-7609-2019
Atmos. Chem. Phys., 19, 7609–7625, 2019
https://doi.org/10.5194/acp-19-7609-2019

Research article 07 Jun 2019

Research article | 07 Jun 2019

Effect of temperature on the formation of highly oxygenated organic molecules (HOMs) from alpha-pinene ozonolysis

Lauriane L. J. Quéléver et al.

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Latest update: 16 Oct 2021
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Short summary
Highly oxygenated organic molecules (HOMs) form rapidly in oxidation of monoterpenes and have been shown to be crucial for secondary organic aerosol formation. We studied the formation of HOMs under different temperatures, finding a strong dependence on their yields. As temperatures decrease, the isomerization reactions that allow rapid oxidation by molecular oxygen slow down, and competing reaction pathways can suppress the HOM formation almost completely, especially at high VOC loadings.
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