Articles | Volume 20, issue 13
Atmos. Chem. Phys., 20, 7875–7893, 2020
https://doi.org/10.5194/acp-20-7875-2020
Atmos. Chem. Phys., 20, 7875–7893, 2020
https://doi.org/10.5194/acp-20-7875-2020

Research article 08 Jul 2020

Research article | 08 Jul 2020

A 1-year characterization of organic aerosol composition and sources using an extractive electrospray ionization time-of-flight mass spectrometer (EESI-TOF)

Lu Qi et al.

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A 1-year characterization of organic aerosol composition and sources using an extractive electrospray ionization time-of-flight mass spectrometer (EESI-TOF) Lu Qi, Alexander L. Vogel, Sepideh Esmaeilirad, Liming Cao, Jing Zheng, Jean-Luc Jaffrezo, Paola Fermo, Anne Kasper-Giebl, Kaspar R. Daellenbach, Mindong Chen, Xinlei Ge, Urs Baltensperger, André S. H. Prévôt, and Jay G. Slowik https://doi.org/10.5281/zenodo.3930871

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Short summary
We present the first application of this online and offline strategy using the new extractive electrospray ionization time-of-flight mass spectrometer (EESI-TOF), which achieves increased chemical specificity relative to other online techniques. Measurement and source apportionment of 1 year of filter samples collected in Zurich, Switzerland, show seasonal contributions from fresh and aged wood combustion in winter and biogenic emission-derived SOA in summer, as well as other sources.
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