Articles | Volume 20, issue 22
Atmos. Chem. Phys., 20, 14123–14138, 2020
https://doi.org/10.5194/acp-20-14123-2020
Atmos. Chem. Phys., 20, 14123–14138, 2020
https://doi.org/10.5194/acp-20-14123-2020

Research article 20 Nov 2020

Research article | 20 Nov 2020

Measurements of higher alkanes using NO+ chemical ionization in PTR-ToF-MS: important contributions of higher alkanes to secondary organic aerosols in China

Chaomin Wang et al.

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Bin Yuan on behalf of the Authors (20 Aug 2020)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (24 Aug 2020) by Jason Surratt
RR by Anonymous Referee #3 (26 Aug 2020)
RR by Anonymous Referee #2 (07 Sep 2020)
ED: Publish subject to minor revisions (review by editor) (07 Sep 2020) by Jason Surratt
AR by Bin Yuan on behalf of the Authors (17 Sep 2020)  Author's response    Manuscript
ED: Publish subject to minor revisions (review by editor) (05 Oct 2020) by Jason Surratt
AR by Bin Yuan on behalf of the Authors (07 Oct 2020)  Author's response    Manuscript
ED: Publish as is (12 Oct 2020) by Jason Surratt
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Short summary
We utilized a novel online mass spectrometry method to measure the total concentration of higher alkanes at each carbon number at two different sites in China, allowing us to take into account SOA contributions from all isomers for higher alkanes. We found that higher alkanes account for significant fractions of SOA formation at the two sites. The contributions are comparable to or even higher than single-ring aromatics, the most-recognized SOA precursors in urban air.
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