Year: 2004
Type: article
Abstract: We report here results of an experimental study of the OH‐initiated oxidation of solid organics in the presence of O2, NOx and H2O, using two kinds of self‐assembled organic monolayers (alkane and aromatic), paraffin and pyrene films as proxies for organic aerosol. We show that the OH‐initiated oxidation of the alkane surfaces leads to rapid volatilization. The gas‐phase products detected include HO2, H2O2, CO, CO2, HCO, CH2O, CH3CHO, CH3OH, and HCOOH. We conclude that volatilization is at least as efficient as wet deposition as a removal process for aliphatic particulates, whereas aromatic particulates show higher stability towards volatilization.
Source: Geophysical Research Letters
DOI: 10.1029/2004gl020910
Institution: Massachusetts Institute of Technology
Language: English
Subfield: Atmospheric Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2041991762