Journal article
Evidence for an unrecognized secondary anthropogenic source of organosulfates and sulfonates: gas-phase oxidation of polycyclic aromatic hydrocarbons in the presence of sulfate aerosol
Environmental science & technology, Vol.49(11), pp.6654-6664
06/02/2015
DOI: 10.1021/acs.est.5b00836
PMID: 25879928
Abstract
In the present study, formation of aromatic organosulfates (OSs) from the photo-oxidation of polycyclic aromatic hydrocarbons (PAHs) was investigated. Naphthalene (NAP) and 2-methylnaphthalene (2-MeNAP), two of the most abundant gas-phase PAHs and thought to represent "missing" sources of urban SOA, were photochemically oxidized in an outdoor smog chamber facility in the presence of nonacidified and acidified sulfate seed aerosol. Effects of seed aerosol composition, acidity and relative humidity on OS formation were examined. Chemical characterization of SOA extracts by ultra performance liquid chromatography coupled to electrospray ionization high-resolution quadrupole time-of-flight mass spectrometry revealed the formation of OSs and sulfonates from photo-oxidation in the presence of sulfate seed aerosol. Many of the organosulfur compounds identified in the smog chamber extracts were also measured in urban fine aerosol collected at Lahore, Pakistan, and Pasadena, USA, demonstrating that PAH photo-oxidation in the presence of sulfate aerosol is a hitherto unrecognized source of anthropogenic secondary organosulfur compounds, and providing new PAH SOA tracers.
Details
- Title: Subtitle
- Evidence for an unrecognized secondary anthropogenic source of organosulfates and sulfonates: gas-phase oxidation of polycyclic aromatic hydrocarbons in the presence of sulfate aerosol
- Creators
- Matthieu Riva - †Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United StatesSophie Tomaz - §EPOC, UMR 5805, CNRS, F-33405 Talence, FranceTianqu Cui - †Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United StatesYing-Hsuan Lin - †Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United StatesEmilie Perraudin - §EPOC, UMR 5805, CNRS, F-33405 Talence, FranceAvram Gold - †Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United StatesElizabeth A Stone - ⊥Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United StatesEric Villenave - §EPOC, UMR 5805, CNRS, F-33405 Talence, FranceJason D Surratt - †Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
- Resource Type
- Journal article
- Publication Details
- Environmental science & technology, Vol.49(11), pp.6654-6664
- Publisher
- United States
- DOI
- 10.1021/acs.est.5b00836
- PMID
- 25879928
- ISSN
- 0013-936X
- eISSN
- 1520-5851
- Grant note
- P30 ES005605 / NIEHS NIH HHS
- Language
- English
- Date published
- 06/02/2015
- Academic Unit
- Chemistry; Chemical and Biochemical Engineering
- Record Identifier
- 9983985870302771
Metrics
20 Record Views