Emissions of biogenic volatile organic compounds from the boreal forest floor and understory : a study by solid-phase microextraction and portable gas chromatography-mass spectrometry

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Feijo Barreira , L M , Duporte , G , Parshintsev , J , Hartonen , K , Jussila , M , Aalto , J , Bäck , J , Kulmala , M & Riekkola , M-L 2017 , ' Emissions of biogenic volatile organic compounds from the boreal forest floor and understory : a study by solid-phase microextraction and portable gas chromatography-mass spectrometry ' , Boreal Environment Research , vol. 22 , pp. 393-413 . < http://www.borenv.net/BER/pdfs/ber22/ber22-393-413.pdf >

Title: Emissions of biogenic volatile organic compounds from the boreal forest floor and understory : a study by solid-phase microextraction and portable gas chromatography-mass spectrometry
Author: Feijo Barreira, Luis Miguel; Duporte, Geoffroy; Parshintsev, Jevgeni; Hartonen, Kari; Jussila, Matti; Aalto, Juho; Bäck, Jaana; Kulmala, Markku; Riekkola, Marja-Liisa
Contributor: University of Helsinki, Department of Chemistry
University of Helsinki, Department of Chemistry
University of Helsinki, Department of Chemistry
University of Helsinki, Department of Chemistry
University of Helsinki, Department of Chemistry
University of Helsinki, Department of Physics
University of Helsinki, Department of Forest Sciences
University of Helsinki, Department of Physics
University of Helsinki, Department of Chemistry
Date: 2017
Language: eng
Number of pages: 21
Belongs to series: Boreal Environment Research
ISSN: 1239-6095
URI: http://hdl.handle.net/10138/224597
Abstract: Vegetation introduces to the atmosphere a diversity of biogenic volatile organic compounds (BVOCs) which affect atmospheric chemistry, air quality and climate. Understory emissions might contribute significantly to the total BVOCs budget. In this work, either dynamic or static solid-phase microextraction (SPME) combined with portable gas chromatography-mass spectrometry were optimized and used for the in-situ measurement of the most abundant BVOCs at understory level. The study was performed in summer 2015 at SMEAR II station in Hyytiälä, Finland. The most abundant BVOCs measured in soil chambers and ambient air were α-pinene and Δ3-carene, and their relative concentrations were similar in every chamber. These species constituted 80-90% of the measured monoterpenes. Aliphatic aldehydes were also measured, and their amounts were lower in soil chambers than in ambient air. Air BVOC concentrations were markedly higher when the wind direction was from south-east, which was associated with transportation from nearby sawmills.
Subject: 116 Chemical sciences
114 Physical sciences
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