reviewChemical ReviewsFeb 25, 2019HYBRID OA

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

FBFederico BianchiTKTheo KurténMRMatthieu RivaCMClaudia MohrMRMatti Rissanen

University of Helsinki · Beijing University of Chemical Technology · +13 more institutions

PubMed
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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…

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Topics & keywords

Topics
Keywords
  • Chemistry
  • Autoxidation
  • Aerosol
  • Radical
  • Atmosphere (unit)
  • Organic molecules
  • Environmental chemistry
  • Photochemistry
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