Articles | Volume 19, issue 12
Atmos. Chem. Phys., 19, 8037–8062, 2019
https://doi.org/10.5194/acp-19-8037-2019
Atmos. Chem. Phys., 19, 8037–8062, 2019
https://doi.org/10.5194/acp-19-8037-2019

Research article 20 Jun 2019

Research article | 20 Jun 2019

Organic aerosol source apportionment in Zurich using an extractive electrospray ionization time-of-flight mass spectrometer (EESI-TOF-MS) – Part 2: Biomass burning influences in winter

Lu Qi et al.

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Lu Qi on behalf of the Authors (28 May 2019)  Author's response    Manuscript
ED: Publish subject to technical corrections (31 May 2019) by Sergey A. Nizkorodov
AR by Lu Qi on behalf of the Authors (05 Jun 2019)  Author's response    Manuscript
Short summary
Current understanding of OA sources is limited by the chemical resolution of existing real-time measurement technology. We describe the first wintertime deployment of a novel extractive electrospray ionization time-of-flight mass spectrometer, which provides near-molecular OA measurements with high time resolution. We show that biomass combustion strongly influences winter OA. Via factor analysis, aging-dependent signatures and time contributions of biomass-combustion-derived OA are resolved.
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