Articles | Volume 21, issue 3
Atmos. Chem. Phys., 21, 2053–2066, 2021
https://doi.org/10.5194/acp-21-2053-2021
Atmos. Chem. Phys., 21, 2053–2066, 2021
https://doi.org/10.5194/acp-21-2053-2021

Research article 11 Feb 2021

Research article | 11 Feb 2021

Effects of liquid–liquid phase separation and relative humidity on the heterogeneous OH oxidation of inorganic–organic aerosols: insights from methylglutaric acid and ammonium sulfate particles

Hoi Ki Lam et al.

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by ManNin Chan on behalf of the Authors (20 Dec 2020)  Author's response    Manuscript
ED: Publish as is (07 Jan 2021) by Markus Ammann
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Short summary
This work demonstrates that organic compounds present at or near the surface of aerosols can be subjected to oxidation initiated by gas-phase oxidants, such as hydroxyl radicals (OH). The heterogeneous reactivity is sensitive to their surface concentrations, which are determined by the phase separation behavior. This results of this work emphasize the effects of phase separation and potentially distinct aerosol morphologies on the chemical transformation of atmospheric aerosols.
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