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Pospisilova V, Lopez-Hilfiker FD, Bell DM, et al. On the fate of oxygenated organic molecules in atmospheric aerosol particles. Sci Adv. 2020;6(11):eaax8922doi: 10.1126/sciadv.aax8922.
Pospisilova, V., Lopez-Hilfiker, F. D., Bell, D. M., El Haddad, I., Mohr, C., Huang, W., Heikkinen, L., Xiao, M., Dommen, J., Prevot, A. S. H., Baltensperger, U., & Slowik, J. G. (2020). On the fate of oxygenated organic molecules in atmospheric aerosol particles. Science advances, 6(11), eaax8922. https://doi.org/10.1126/sciadv.aax8922
Pospisilova, V, et al. "On the fate of oxygenated organic molecules in atmospheric aerosol particles." Science advances vol. 6,11 (2020): eaax8922. doi: https://doi.org/10.1126/sciadv.aax8922
Pospisilova V, Lopez-Hilfiker FD, Bell DM, El Haddad I, Mohr C, Huang W, Heikkinen L, Xiao M, Dommen J, Prevot ASH, Baltensperger U, Slowik JG. On the fate of oxygenated organic molecules in atmospheric aerosol particles. Sci Adv. 2020 Mar 13;6(11):eaax8922. doi: 10.1126/sciadv.aax8922. eCollection 2020 Mar. PMID: 32201715; PMCID: PMC7069715.
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Sci Adv. 2020 Mar 13;6(11):eaax8922. doi: 10.1126/sciadv.aax8922. eCollection 2020 Mar.

On the fate of oxygenated organic molecules in atmospheric aerosol particles.

Science advances

V Pospisilova, F D Lopez-Hilfiker, D M Bell, I El Haddad, C Mohr, W Huang, L Heikkinen, M Xiao, J Dommen, A S H Prevot, U Baltensperger, J G Slowik

Affiliations

  1. Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland.
  2. Tofwerk AG, 3600 Thun, Switzerland.
  3. Department of Environmental Science, Stockholm University, Stockholm 11418, Sweden.
  4. Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany.
  5. Institute for Atmospheric and Earth System Research, Faculty of Science, University of Helsinki, Helsinki 00014, Finland.

PMID: 32201715 PMCID: PMC7069715 DOI: 10.1126/sciadv.aax8922

Abstract

Highly oxygenated organic molecules (HOMs) are formed from the oxidation of biogenic and anthropogenic gases and affect Earth's climate and air quality by their key role in particle formation and growth. While the formation of these molecules in the gas phase has been extensively studied, the complexity of organic aerosol (OA) and lack of suitable measurement techniques have hindered the investigation of their fate post-condensation, although further reactions have been proposed. We report here novel real-time measurements of these species in the particle phase, achieved using our recently developed extractive electrospray ionization time-of-flight mass spectrometer (EESI-TOF). Our results reveal that condensed-phase reactions rapidly alter OA composition and the contribution of HOMs to the particle mass. In consequence, the atmospheric fate of HOMs cannot be described solely in terms of volatility, but particle-phase reactions must be considered to describe HOM effects on the overall particle life cycle and global carbon budget.

Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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