Articles | Volume 21, issue 19
Atmos. Chem. Phys., 21, 15003–15021, 2021
https://doi.org/10.5194/acp-21-15003-2021
Atmos. Chem. Phys., 21, 15003–15021, 2021
https://doi.org/10.5194/acp-21-15003-2021

Research article 08 Oct 2021

Research article | 08 Oct 2021

An organic crystalline state in ageing atmospheric aerosol proxies: spatially resolved structural changes in levitated fatty acid particles

Adam Milsom et al.

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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on acp-2021-270', Anonymous Referee #1, 22 May 2021
  • RC2: 'Comment on acp-2021-270', Anonymous Referee #2, 23 May 2021
    • AC1: 'Reply on RC2 - supplement access issue', Christian Pfrang, 23 May 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Christian Pfrang on behalf of the Authors (10 Jul 2021)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (22 Jul 2021) by Ryan Sullivan
RR by Anonymous Referee #2 (04 Aug 2021)
ED: Publish subject to minor revisions (review by editor) (04 Aug 2021) by Ryan Sullivan
AR by Christian Pfrang on behalf of the Authors (12 Aug 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (04 Sep 2021) by Ryan Sullivan
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Short summary
Atmospheric aerosols can be solid, semi-solid or liquid. This phase state may impact key aerosol processes such as oxidation and water uptake, affecting cloud droplet formation and urban air pollution. We have observed a solid crystalline organic phase in a levitated proxy for cooking emissions, oleic acid. Spatially resolved structural changes were followed during ageing by X-ray scattering, revealing phase gradients, aggregate products and a markedly reduced ozonolysis reaction rate.
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