Articles | Volume 17, issue 23
https://doi.org/10.5194/acp-17-14415-2017
https://doi.org/10.5194/acp-17-14415-2017
Research article
 | 
05 Dec 2017
Research article |  | 05 Dec 2017

Compositional evolution of particle-phase reaction products and water in the heterogeneous OH oxidation of model aqueous organic aerosols

Man Mei Chim, Chiu Tung Cheng, James F. Davies, Thomas Berkemeier, Manabu Shiraiwa, Andreas Zuend, and Man Nin Chan

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by ManNin Chan on behalf of the Authors (20 Sep 2017)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (24 Sep 2017) by Frank Keutsch
RR by Anonymous Referee #2 (12 Oct 2017)
RR by Anonymous Referee #3 (13 Oct 2017)
ED: Publish as is (03 Nov 2017) by Frank Keutsch
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Short summary
In this work, we report that methyl-substituted succinic acid present at or near the surface of aqueous organic droplets can be efficiently oxidized by gas-phase OH radicals. The alkoxy radical chemistry appears to be an important reaction pathway. In addition, our model simulations reveal the relative importance of functionalization and fragmentation processes, alongside volatilization, in the evolution of the particle-phase reaction, which is largely dependent on the extent of oxidation.
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