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Environ Sci Technol

Title:		Volatile Organic Compounds from Logwood Combustion: Emissions and Transformation under Dark and Photochemical Aging Conditions in a Smog Chamber
Author(s):		Hartikainen A; Yli-Pirila P; Tiitta P; Leskinen A; Kortelainen M; Orasche J; Schnelle-Kreis J; Lehtinen KEJ; Zimmermann R; Jokiniemi J; Sippula O;
Address:		"Department of Environmental and Biological Sciences , University of Eastern Finland , P.O. Box 1627, 70211 Kuopio , Finland. Department of Applied Physics , University of Eastern Finland , P.O. Box 1627, 70211 Kuopio , Finland. Finnish Meteorological Institute , P.O. Box 1627, 70211 Kuopio , Finland. Cooperation Group Comprehensive Molecular Analytics, Helmholtz Zentrum Munchen, German Research Center for Environmental Health, 85764 Oberschleissheim , Germany. Analytical Chemistry, Institute of Chemistry , University of Rostock , 18059 Rostock , Germany. Department of Chemistry , University of Eastern Finland , P.O. Box 111, 80101 Joensuu , Finland"
Journal Title:		Environ Sci Technol
Year:		2018
Volume:		20180406
Issue:		8
Page Number:		4979 - 4988
DOI:		10.1021/acs.est.7b06269
ISSN/ISBN:		1520-5851 (Electronic) 0013-936X (Linking)
Abstract:		"Residential wood combustion (RWC) emits high amounts of volatile organic compounds (VOCs) into ambient air, leading to formation of secondary organic aerosol (SOA), and various health and climate effects. In this study, the emission factors of VOCs from a logwood-fired modern masonry heater were measured using a Proton-Transfer-Reactor Time-of-Flight Mass Spectrometer. Next, the VOCs were aged in a 29 m(3) Teflon chamber equipped with UV black lights, where dark and photochemical atmospheric conditions were simulated. The main constituents of the VOC emissions were carbonyls and aromatic compounds, which accounted for 50%-52% and 30%-46% of the detected VOC emission, respectively. Emissions were highly susceptible to different combustion conditions, which caused a 2.4-fold variation in emission factors. The overall VOC concentrations declined considerably during both dark and photochemical aging, with simultaneous increase in particulate organic aerosol mass. Especially furanoic and phenolic compounds decreased, and they are suggested to be the major precursors of RWC-originated SOA in all aging conditions. On the other hand, dark aging produced relatively high amounts of nitrogen-containing organic compounds in both gas and particulate phase, while photochemical aging increased especially the concentrations of certain gaseous carbonyls, particularly acid anhydrides"
Keywords:		Aerosols *Air Pollutants Gases Smog *Volatile Organic Compounds;
Notes:		"MedlineHartikainen, Anni Yli-Pirila, Pasi Tiitta, Petri Leskinen, Ari Kortelainen, Miika Orasche, Jurgen Schnelle-Kreis, Jurgen Lehtinen, Kari E J Zimmermann, Ralf Jokiniemi, Jorma Sippula, Olli eng Research Support, Non-U.S. Gov't 2018/03/09 Environ Sci Technol. 2018 Apr 17; 52(8):4979-4988. doi: 10.1021/acs.est.7b06269. Epub 2018 Apr 6"