TITLE

Characterisation of organic compounds in aerosol particles from a Finnish forest by on-line coupled supercritical fluid extraction–liquid chromatography–gas chromatography–mass spectrometry

AUTHOR(S)
Shimmo, Masahiko; Jäntti, Jaana; Aalto, Pasi; Hartonen, Kari; Hyötyläinen, Tuulia; Kulmala, Markku; Riekkola, Marja-Liisa
PUB. DATE
April 2004
SOURCE
Analytical & Bioanalytical Chemistry;Apr2004, Vol. 378 Issue 8, p1982
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
During the European Union project Quantification of Aerosol Nucleation in the European Boundary Layer (QUEST), which began in spring 2003, atmospheric aerosol particles were collected in a Finnish Scots pine forest using a high-volume sampler. The organic compounds in the filter samples were then analysed by on-line coupled supercritical fluid extraction–liquid chromatography–gas chromatography–mass spectrometry (SFE–LC–GC–MS). The sample was first extracted by SFE. During LC the extracts were fractionated into three fractions according to polarity. The final separation was carried out by GC–MS. A fraction volume as high as 840 μL was transferred to the GC, using the partial concurrent eluent evaporation technique. The same instrumentation, with an in-situ SFE derivatisation method, was used to analyse organic acids. Major compounds such as n-alkanes and PAH were analysed quantitatively. Their concentrations were lower than those usually observed in urban areas or in other forest areas in Europe. The wind direction was one of the most important factors affecting changes in the daily concentrations of these compounds. Scots pine needles were analysed with the same system to obtain reference data for identification of biogenic compounds in aerosol particles. Other organic compounds found in this study included hopanes, steranes, n-alkanals, n-alkan-2-ones, oxy-PAH, and alkyl-PAH; some biogenic products, including oxidation products of monoterpenes, were also identified.
ACCESSION #
15125000

 

Related Articles

  • Airborne measurements of nucleation mode particles II: boreal forest nucleation events. O’Dowd, C. D.; Yoon, Y. J.; Junkerman, W.; Aalto, P.; Kulmala, M.; Lihavainen, H.; Viisanen, Y. // Atmospheric Chemistry & Physics Discussions;2008, Vol. 8 Issue 1, p2821 

    Airborne measurements of nucleation mode aerosol concentrations during nucleation events over the boreal forest of southern Finland are reported. Three case studies are analysis in an attempt to characterise the spatial scales over which these events occur and to identify the source region for...

  • Solvatochromism of heteroaromatic compounds: XXIX. Configurational isomerism of H complexes of phenols with amides and esters. Oznobikhina, L. P.; Vokin, A. I.; Shulunova, A. M.; Turchaninov, V. K. // Russian Journal of General Chemistry;May2006, Vol. 76 Issue 5, p766 

    Phenol and amides and esters in carbon tetrachloride form an H complex with an OH n bond, whose configurational isomers differ from each other by the direction of the hydrogen bond and, as a result, by the value of the spectral shift. Structural details of such configurational isomers and...

  • Molecular simulation of the homogeneous crystal nucleation of carbon dioxide. Leyssale, Jean-Marc; Delhommelle, Jérôme; Millot, Claude // Journal of Chemical Physics;5/8/2005, Vol. 122 Issue 18, p184518 

    We report on a molecular simulation study of the homogeneous nucleation of CO2 in the supercooled liquid at low pressure (P=5 MPa) and for degrees of supercooling ranging from 32% to 60%. In all cases, regardless of the degree of supercooling, the structure of the crystal nuclei is that of the...

  • Testing of a structural model of sebacate clusters. Rybin, E. // Colloid Journal;Jul2008, Vol. 70 Issue 4, p466 

    Experimental data on the nucleation of vapors of sebacates, which are low-volatile liquids with relatively long-chain molecules, have been analyzed. The work of cluster formation has been calculated in terms of simplest structural models. The structural model of the clusters, which implies them...

  • Nucleation-driven regeneration promotes post-fire recovery in a Chilean temperate forest. Albornoz, Felipe; Gaxiola, Aurora; Seaman, Bárbara; Pugnaire, Francisco; Armesto, Juan // Plant Ecology;May2013, Vol. 214 Issue 5, p765 

    Nucleation is a successional process in which extant vegetation facilitates seed dispersal and recruitment of other individuals and species around focal points in the landscape, leading to ecosystem recovery. This is an important process in disturbed sites where regeneration is limited by...

  • Stability order of isomeric benzenoid hydrocarbons and Kekulé structure count. Radenković, Slavko; Gutman, Ivan // Journal of the Serbian Chemical Society;Feb2009, Vol. 74 Issue 2, p155 

    The commonly accepted opinion that the thermodynamic stability of isomeric benzenoid hydrocarbons (assessed by their total p-electron energy and various resonance energies) increases with increasing number of Kekulé structures is shown to be violated in numerous cases. The smallest examples...

  • Reaction ofO,O-diisopropyl phosphorodithioic acid and its trimethylsilyl ester with orthoformic ester. Nizamov, I. S.; Sergeenko, G. G.; Nizamov, I. D.; Ermolaev, E. S.; Bol’shakova, O. V.; Yambushev, F. D.; Al’metkina, L. A.; Batyeva, E. S. // Russian Journal of General Chemistry;Aug2004, Vol. 74 Issue 8, p1291 

    The article cites a research study on the reaction of 0,0-diisopropyl phosphorodithioic acid and its trimethylsilyl ester with orthoformic ester. S-Trimethylsilyl phosphorodithioates and tri- methylsilyl phosphonotrithioates have been pre- viously involved mainly into addition reactions by...

  • γ-Alkylthio-γ-chloro-α,β-dicarbonyl Compounds. Guseinov, F. I.; Burangulova, R. N.; Ismailov, V. M. // Russian Journal of Organic Chemistry;May2003, Vol. 39 Issue 5, p742 

    The article focuses on γ-Alkylthio-γ-chloro-α,β-dicarbonyl compounds. Reactions of α-chloro-β-oxoaldehydes with O-, N-, and C-anionic nucleophiles are known to involve cleavage of the C-CHO bond. Researchers have found that the main pathway in the reactions of α,...

  • Theoretical conformational analysis of unsaturated phospines and phosphinechalcogenides. Fedorov, S. V.; Rusakov, Yu. Yu.; Krivdin, L. B.; Istomina, N. V.; Arbuzova, S. N.; Malysheva, S. F. // Russian Journal of Organic Chemistry;May2009, Vol. 45 Issue 5, p667 

    A theoretical conformational analysis was performed for vinylphosphine CH2=CHPH2 and three vinylphosphinechalcogenides CH2=CHPXH2 (X = O, S, Se). According to the quantum-chemical calculations on the level of the second order perturbation theory MP2/6-311G** the prevailing conformations, their...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics