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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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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