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Organic nitrate aerosol formation via NO³ + biogenic volatile organic compounds in the southeastern United States

Ayres, B.R.; Allen, H.M.; Draper, D.C.; Brown, S.S.; WIld, R.J.; Jimenez, J.L.; Day, D.A.; Campuzano-Jost, P.; Hu, W.; de Gouw, J.; Koss, A.; Cohen, R.C.; Duffey, K.C.; Romer, P.; Baumann, K.; Edgerton, E.; Takahama, S.; Thornton, J.A.; Lee, B.H.; Lopez-Hilfiker, F.D.; ... mehr

Gas- and aerosol-phase measurements of oxidants, biogenic volatile organic compounds (BVOCs) and organic nitrates made during the Southern Oxidant and Aerosol Study (SOAS campaign, Summer 2013) in central Alabama show that a nitrate radical (NO₃) reaction with monoterpenes leads to significant secondary aerosol formation. Cumulative losses of NO₃ to terpenes are correlated with increase in gasand aerosol-organic nitrate concentrations made during the campaign. Correlation of NO₃ radical consumption to organic nitrate aerosol formation as measured by aerosol mass spectrometry and thermal dissociation laser-induced fluorescence suggests a molar yield of aerosol-phase monoterpene nitrates of 23–44 %. Compounds observed via chemical ionization mass spectrometry (CIMS) are correlated to predicted nitrate loss to BVOCs and show C₁₀H₁₇NO₅, likely a hydroperoxy nitrate, is a major nitrate-oxidized terpene product being incorporated into aerosols. The comparable isoprene product C₅H₉NO₅ was observed to contribute less than 1% of the total organic nitrate in the aerosol phase and correlations show that it is principally a gas-phase product from nitrate oxidation of isoprene. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/110104154
Veröffentlicht am 23.10.2018
DOI: 10.5194/acp-15-13377-2015
Zitationen: 63
Web of Science
Zitationen: 62
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Aerosolforschung (IMK-AAF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2015
Sprache Englisch
Identifikator ISSN: 1680-7316, 1680-7324
KITopen-ID: 110104154
HGF-Programm 12.03.03 (POF III, LK 01) Gas to particle conversion
Erschienen in Atmospheric chemistry and physics
Verlag European Geosciences Union (EGU)
Band 15
Seiten 13377-13392
Nachgewiesen in Scopus
Web of Science
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