Sources of particulate organic nitrates in the boreal forest in Finland

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http://hdl.handle.net/10138/308104

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Kortelainen , A , Hao , L , Tiitta , P , Jaatinen , A , Miettinen , P , Kulmala , M , Smith , J N , Laaksonen , A , Worsnop , D R & Virtanen , A 2017 , ' Sources of particulate organic nitrates in the boreal forest in Finland ' , Boreal Environment Research , vol. 22 , no. 1 , pp. 13-26 .

Title: Sources of particulate organic nitrates in the boreal forest in Finland
Author: Kortelainen, Aki; Hao, Liqing; Tiitta, Petri; Jaatinen, Antti; Miettinen, Pasi; Kulmala, Markku; Smith, James N.; Laaksonen, Ari; Worsnop, Douglas R.; Virtanen, Annele
Contributor organization: Department of Physics
Polar and arctic atmospheric research (PANDA)
Date: 2017
Language: eng
Number of pages: 14
Belongs to series: Boreal Environment Research
ISSN: 1239-6095
URI: http://hdl.handle.net/10138/308104
Abstract: Organic nitrates (ON) are known to be present in secondary organic aerosol and act as a reservoir of nitrogen oxides, regulating the local and regional ozone and hydroxyl radical budgets. This work reports observations of particulate ON in Finnish remote boreal forest at a site with dominant emissions from biogenic volatile organic compounds. High Resolution-Aerosol Mass Spectrometer data were analysed in a unique way to characterize the sources of inorganic and organic nitrates. ON were found to be related to local sources with semi-volatile properties. Also they were implying a nocturnal formation mechanism. Occasionally, local sawmill emissions contributed greatly to the organic nitrates. The observations indicated that in the remote boreal forest area the NO 3 radicals are oxidizing biogenic VOCs producing ON. This work demonstrates the significant impact of anthropogenic-biogenic emissions interaction on the atmospheric organic nitrate aerosol mass concentration.
Subject: AEROSOL MASS-SPECTROMETER
POSITIVE MATRIX FACTORIZATION
HIGH-RESOLUTION
ATMOSPHERIC CHEMISTRY
SUBMICRON PARTICLES
CHEMICAL-COMPOSITION
ELEMENTAL ANALYSIS
SIERRA-NEVADA
NOX
SECONDARY
114 Physical sciences
1172 Environmental sciences
Peer reviewed: Yes
Rights: cc_by_nc_sa
Usage restriction: openAccess
Self-archived version: publishedVersion


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