CaltechAUTHORS
Published March 27, 2019 | Version Published
Journal Article Open

Highly Oxygenated Molecules (HOM) from Gas-Phase Autoxidation Involving Organic Peroxy Radicals: A Key Contributor to Atmospheric Aerosol

Creators

  • 1. ROR icon University of Helsinki
  • 2. ROR icon Institute of Researches on Catalysis and Environment in Lyon
  • 3. ROR icon Stockholm University
  • 4. ROR icon Lund University
  • 5. ROR icon Leibniz Institute for Tropospheric Research
  • 6. ROR icon California Institute of Technology
  • 7. ROR icon Forschungszentrum Jülich
  • 8. ROR icon University of Tartu
  • 9. ROR icon Aerodyne Research
  • 10. ROR icon University of Washington
  • 11. ROR icon Carnegie Mellon University
  • 12. ROR icon University of Copenhagen

Abstract

Highly oxygenated organic molecules (HOM) are formed in the atmosphere via autoxidation involving peroxy radicals arising from volatile organic compounds (VOC). HOM condense on pre-existing particles and can be involved in new particle formation. HOM thus contribute to the formation of secondary organic aerosol (SOA), a significant and ubiquitous component of atmospheric aerosol known to affect the Earth's radiation balance. HOM were discovered only very recently, but the interest in these compounds has grown rapidly. In this Review, we define HOM and describe the currently available techniques for their identification/quantification, followed by a summary of the current knowledge on their formation mechanisms and physicochemical properties. A main aim is to provide a common frame for the currently quite fragmented literature on HOM studies. Finally, we highlight the existing gaps in our understanding and suggest directions for future HOM research.

Additional Information

© 2019 American Chemical Society. ACS AuthorChoice - This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. Received: June 25, 2018; Publication Date (Web): February 25, 2019. We thank Ugo Molteni, Liine Heikkinen, Rasmus V. Otkjær, and Kristian H. Møller for useful discussion. We thank the CSC Centre for Scientific Computing in Finland and the Danish Center for Scientific Computing from the Copenhagen University. We also thank the Center for Exploitation of Solar Energy founded by the University of Copenhagen, the Swedish Strategic Research Program MERGE, and the European Regional Development Fund (project MOBTT42). This research has received funding from the Swiss National Science Foundation (P2EZP2_168787), the Academy of Finland (grant no. 1315203, 266388 and 299574), the U.S. National Science Foundation (grant nos. AGS 1801897, ACS 1508526), the U.S. Department of Energy's Office of Science (grant no. DE-SC0018221), and the European Research Council starting grant COALA (grant no. 638703). The authors declare no competing financial interest.

Attached Files

Published - acs.chemrev.8b00395.pdf

Files

acs.chemrev.8b00395.pdf

Files (3.8 MB)

Name Size
md5:e54c378f0279295466239815e1a8ed93
3.8 MB Preview Download

Additional details

Additional titles

Alternative title
Highly Oxygenated Organic Molecules (HOM) from Gas-Phase Autoxidation Involving Peroxy Radicals: A Key Contributor to Atmospheric Aerosol

Identifiers

PMCID
PMC6439441
Eprint ID
93220
Resolver ID
CaltechAUTHORS:20190225-101818008

Funding

European Regional Development Fund
MOBTT42
Swiss National Science Foundation (SNSF)
P2EZP2_168787
Academy of Finland
131520
Academy of Finland
266388
Academy of Finland
299574
NSF
AGS-1801897
NSF
ACS-1508526
Department of Energy (DOE)
DE-SC0018221
European Research Council (ERC)
638703

Dates

Created
2019-02-25
Created from EPrint's datestamp field
Updated
2022-03-01
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Division of Geological and Planetary Sciences (GPS)