Multi-generation OH oxidation as a source for highly oxygenated organic molecules from aromatics

Garmash, Olga; Rissanen, Matti P.; Pullinen, Iida; Schmitt, Sebastian; Kausiala, Oskari; Tillmann, Ralf; Zhao, Defeng; Percival, Carl; Bannan, Thomas J.; Priestley, Michael; Hallquist, Åsa M.; Kleist, Einhard; Kiendler-Scharr, Astrid; Hallquist, Mattias; Berndt, Torsten; McFiggans, Gordon; Wildt, Jürgen; Mentel, Thomas F.; Ehn, Mikael

doi:https://doi.org/10.5194/acp-20-515-2020

Articles | Volume 20, issue 1

Atmos. Chem. Phys., 20, 515–537, 2020

https://doi.org/10.5194/acp-20-515-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Atmos. Chem. Phys., 20, 515–537, 2020

https://doi.org/10.5194/acp-20-515-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 1

Research article 15 Jan 2020

Research article | 15 Jan 2020

Multi-generation OH oxidation as a source for highly oxygenated organic molecules from aromatics

Olga Garmash et al.

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Final revised paper (published on 15 Jan 2020)
Supplement to the final revised paper
Preprint (discussion started on 26 Jun 2019)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'review', Anonymous Referee #1, 06 Aug 2019
RC2: 'Anonymous Review', Anonymous Referee #2, 27 Aug 2019
AC1: 'Response to referees', Olga Garmash, 31 Oct 2019

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Olga Garmash on behalf of the Authors (04 Nov 2019) Author's response Manuscript

ED: Publish as is (08 Nov 2019) by Nga Lee Ng

Post-review adjustments

AA: Author's adjustment | EA: Editor approval

AA by Olga Garmash on behalf of the Authors (08 Jan 2020) Author's adjustment Manuscript

EA: Adjustments approved (12 Jan 2020) by Nga Lee Ng

Short summary

Highly oxygenated organic molecules (HOMs) facilitate aerosol formation in the atmosphere. Using NO₃⁻ chemical ionization mass spectrometry we investigated HOM composition and yield in oxidation of aromatic compounds at different reactant concentrations, in the presence of NO_x and seed aerosol. Higher OH concentrations increased HOM yield, suggesting multiple oxidation steps, and affected HOM composition, potentially explaining in part discrepancies in published secondary organic aerosol yields.