title: Effect of Pellet Boiler Exhaust on Secondary Organic Aerosol Formation from α-Pinene.
abstract: Interactions between anthropogenic and biogenic emissions, and implications for aerosol production, have raised particular scientific interest. Despite active research in this area, real anthropogenic emission sources have not been exploited for anthropogenic-biogenic interaction studies until now. This work examines these interactions using α-pinene and pellet boiler emissions as a model test system. The impact of pellet boiler emissions on secondary organic aerosol (SOA) formation from α-pinene photo-oxidation was studied under atmospherically relevant conditions in an environmental chamber. The aim of this study was to identify which of the major pellet exhaust components (including high nitrogen oxide (NOx), primary particles, or a combination of the two) affected SOA formation from α-pinene. Results demonstrated that high NOxconcentrations emitted by the pellet boiler reduced SOA yields from α-pinene, whereas the chemical properties of the primary particles emitted by the pellet boiler had no effect on observed SOA yields. The maximum SOA yield of α-pinene in the presence of pellet boiler exhaust (under high-NOxconditions) was 18.7% and in the absence of pellet boiler exhaust (under low-NOxconditions) was 34.1%. The reduced SOA yield under high-NOxconditions was caused by changes in gas-phase chemistry that led to the formation of organonitrate compounds.
authors.affiliation: Department of Applied Physics, University of Eastern Finland , P.O. Box 1626, 70211 Kuopio, Finland.
authors.forename: Eetu
authors.identifier: 0000-0001-6611-7568
authors.initials: E
authors.lastname: Kari
authors.affiliation: Department of Applied Physics, University of Eastern Finland , P.O. Box 1626, 70211 Kuopio, Finland.
authors.forename: Liqing
authors.initials: L
authors.lastname: Hao
authors.affiliation: Department of Applied Physics, University of Eastern Finland , P.O. Box 1626, 70211 Kuopio, Finland.
authors.forename: Pasi
authors.identifier: 0000-0002-7882-4574
authors.initials: P
authors.lastname: Yli-Pirilä
authors.affiliation: Department of Applied Physics, University of Eastern Finland , P.O. Box 1626, 70211 Kuopio, Finland.|Finnish Meteorological Institute, Kuopio Unit, P.O. Box 1627, 70211 Kuopio, Finland.
authors.forename: Ari
authors.initials: A
authors.lastname: Leskinen
authors.affiliation: Department of Environmental and Biological Sciences, University of Eastern Finland , P.O. Box 1627, 70211 Kuopio, Finland.
authors.forename: Miika
authors.initials: M
authors.lastname: Kortelainen
authors.affiliation: Department of Environmental and Biological Sciences, University of Eastern Finland , P.O. Box 1627, 70211 Kuopio, Finland.
authors.forename: Julija
authors.initials: J
authors.lastname: Grigonyte
authors.affiliation: Department of Applied Physics, University of Eastern Finland , P.O. Box 1626, 70211 Kuopio, Finland.|Aerodyne Research, Inc., Billerica, Massachusetts 08121-3976, United States.|Department of Physics, University of Helsinki , P.O. Box 64, 00014 Helsinki, Finland.
authors.forename: Douglas R
authors.initials: DR
authors.lastname: Worsnop
authors.affiliation: Department of Environmental and Biological Sciences, University of Eastern Finland , P.O. Box 1627, 70211 Kuopio, Finland.
authors.forename: Jorma
authors.initials: J
authors.lastname: Jokiniemi
authors.affiliation: Department of Environmental and Biological Sciences, University of Eastern Finland , P.O. Box 1627, 70211 Kuopio, Finland.
authors.forename: Olli
authors.initials: O
authors.lastname: Sippula
authors.affiliation: Department of Applied Physics, University of Eastern Finland , P.O. Box 1626, 70211 Kuopio, Finland.
authors.forename: Celia L
authors.initials: CL
authors.lastname: Faiola
authors.affiliation: Department of Applied Physics, University of Eastern Finland , P.O. Box 1626, 70211 Kuopio, Finland.
authors.forename: Annele
authors.initials: A
authors.lastname: Virtanen
mesh_terms: D000336:Aerosols / Q000737:chemistry*; D000393:Air Pollutants / Q000737:chemistry*; D039821:Monoterpenes / Q000737:chemistry; D010084:Oxidation-Reduction; D001335:Vehicle Emissions
chemical_list: D000336:Aerosols; D000393:Air Pollutants; D039821:Monoterpenes; D001335:Vehicle Emissions