Amines in boreal forest air at SMEAR II station in Finland

Show full item record



Permalink

http://hdl.handle.net/10138/276986

Citation

Hemmilä , M , Hellén , H , Virkkula , A , Makkonen , U , Praplan , A P , Kontkanen , J , Ahonen , L , Kulmala , M & Hakola , H 2018 , ' Amines in boreal forest air at SMEAR II station in Finland ' , Atmospheric Chemistry and Physics , vol. 18 , no. 9 , pp. 6367-6380 . https://doi.org/10.5194/acp-18-6367-2018

Title: Amines in boreal forest air at SMEAR II station in Finland
Author: Hemmilä, Marja; Hellén, Heidi; Virkkula, Aki; Makkonen, Ulla; Praplan, Arnaud P.; Kontkanen, Jenni; Ahonen, Lauri; Kulmala, Markku; Hakola, Hannele
Contributor: University of Helsinki, Finnish Meteorological Institute
University of Helsinki, INAR Physics
University of Helsinki, Finnish Meteorological Institute
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
Date: 2018-05-04
Language: eng
Number of pages: 14
Belongs to series: Atmospheric Chemistry and Physics
ISSN: 1680-7316
URI: http://hdl.handle.net/10138/276986
Abstract: We measured amines in boreal forest air in Finland both in gas and particle phases with 1 h time resolution using an online ion chromatograph (instrument for Measuring AeRosols and Gases in Ambient Air - MARGA) connected to an electrospray ionization quadrupole mass spectrometer (MS). The developed MARGA-MS method was able to separate and detect seven different amines: monomethylamine (MMA), dimethylamine (DMA), trimethylamine (TMA), ethylamine (EA), diethylamine (DEA), propylamine (PA), and butylamine (BA). The detection limits of the method for amines were low (0.2-3.1 ng m(-3)), the accuracy of ICMS analysis was 11-37 %, and the precision 10-15 %. The proper measurements in the boreal forest covered about 8 weeks between March and December 2015. The amines were found to be an inhomogeneous group of compounds, showing different seasonal and diurnal variability. Total MMA (MMA(tot)) peaked together with the sum of ammonia and ammonium ions already in March. In March, monthly means for MMA were 90 %, gas-phase DMA correlated well with 1.1-2 nm particle number concentration (R-2 = 0.63) suggesting that it participates in atmospheric clustering. EA concentrations were low all the time. Its July means were <0.36 and 0.4 +/- 0.4 ng m(-3) in gas and aerosol phases, respectively, but individual concentration data correlated well with monoterpene concentrations in July. Monthly means of PA and BA were below detection limits at all times.
Subject: CHROMATOGRAPHY-MASS SPECTROMETRY
INORGANIC AEROSOL MEASUREMENTS
PARTICLE-SIZE MAGNIFIER
SCOTS PINE FOREST
ION CHROMATOGRAPHY
SULFURIC-ACID
ATMOSPHERIC AMINES
PARTICULATE MATTER
SEMICONTINUOUS GAS
AROMATIC-AMINES
1172 Environmental sciences
114 Physical sciences
116 Chemical sciences
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
acp_18_6367_2018.pdf 4.749Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record