Comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry in the identification of organic compounds in atmospheric aerosols from coniferous forest.
Comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC x GC-TOF-MS) was applied in the identification of organic compounds in atmospheric aerosols from coniferous forest. The samples were collected at Hyytiälä, Finland, as part of the QUEST campaign, in Spring 2003. Manual and automated search procedures were compared in the identification. An automated procedure is preferable when a large number of data files need to be processed; but manual search was more accurate with the present samples, where the number of compounds was large and most of the compounds of interest were present at trace level. Altogether, about 50 compounds were identified on the basis of mass spectra and linear retention indices. The identified compounds included oxidised monoterpenes, acyclic alkanes, alkenes, ketones and aldehydes, as well as a few alcohols, acids, and aromatic compounds.
Kallio
Minna
M
Laboratory of Analytical Chemistry, Department of Chemistry, PO Box 55, FIN-00014 University of Helsinki, Finland.
Jussila
Matti
M
Rissanen
Taija
T
Anttila
Piia
P
Hartonen
Kari
K
Reissell
Anni
A
Vreuls
René
R
Adahchour
Mohamed
M
Hyötyläinen
Tuulia
T
D000336:Aerosols / Q000737:chemistry*; D001272:Atmosphere / Q000737:chemistry*; D001331:Automation; D052176:Azulenes; D002849:Chromatography, Gas / Q000379:methods*; D005387:Finland; D005410:Flame Ionization; D006844:Hydrocarbons, Cyclic / Q000032:analysis*; D013058:Mass Spectrometry; D012717:Sesquiterpenes; D013729:Terpenes / Q000737:chemistry; D064028:Tracheophyta / Q000737:chemistry*; D014197:Trees / Q000378:metabolism*
D000336:Aerosols; D052176:Azulenes; D006844:Hydrocarbons, Cyclic; D012717:Sesquiterpenes; D013729:Terpenes; C419726:alloaromadendrene