Evidence for organosulfates in secondary organic aerosol

Jason D. Surratt, Jesse H. Kroll, Tadeusz E. Kleindienst, Edward O. Edney, Magda Claeys, Armin Sorooshian, Nga L. Ng, John H. Offenberg, Michael Lewandowski, Mohammed Jaoui, Richard C. Flagan, John H. Seinfeld

Research output: Contribution to journalArticle

380 Scopus citations

Abstract

Recent work has shown that particle-phase reactions contribute to the formation of secondary organic aerosol (SOA), with enhancements of SOA yields in the presence of acidic seed aerosol. In this study, the chemical composition of SOA from the photooxidations of α-pinene and isoprene, in the presence or absence of sulfate seed aerosol, is investigated through a series of controlled chamber experiments in two separate laboratories. By using electrospray ionization-mass spectrometry, sulfate esters in SOA produced in laboratory photooxidation experiments are identified for the first time. Sulfate esters are found to account for a larger fraction of the SOA mass when the acidity of seed aerosol is increased, a result consistent with aerosol acidity increasing SOA formation. Many of the isoprene and α-pinene sulfate esters identified in these chamber experiments are also found in ambient aerosol collected at several locations in the southeastern U.S. It is likely that this pathway is important for other biogenic terpenes, and may be important in the formation of humic-like substances (HULIS) in ambient aerosol.

Original languageEnglish (US)
Pages (from-to)517-527
Number of pages11
JournalEnvironmental Science and Technology
Volume41
Issue number2
DOIs
StatePublished - Jan 15 2007
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

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    Surratt, J. D., Kroll, J. H., Kleindienst, T. E., Edney, E. O., Claeys, M., Sorooshian, A., Ng, N. L., Offenberg, J. H., Lewandowski, M., Jaoui, M., Flagan, R. C., & Seinfeld, J. H. (2007). Evidence for organosulfates in secondary organic aerosol. Environmental Science and Technology, 41(2), 517-527. https://doi.org/10.1021/es062081q