Polar organic marker compounds in PM2.5 aerosol from a mixed forest site in western Germany

Chemosphere
Ivan KourtchevMagda Claeys

Abstract

The molecular composition of PM2.5 (particulate matter with an aerodynamic diameter <2.5 microm) aerosol samples collected during a very warm and dry 2003 summer period at a mixed forest site in Jülich, Germany, was determined by gas chromatography/mass spectrometry in an effort to evaluate photooxidation products of biogenic volatile organic compounds (BVOCs) and other markers for aerosol source characterization. Six major classes of compounds represented by twenty-four individual organic species were identified and measured, comprising tracers for biomass combustion, short-chain acids, fatty acids, sugars/sugar alcohols, and tracers for the photooxidation of isoprene and alpha-/beta-pinene. The tracers for the photooxidation of alpha-/beta-pinene include two compounds, 3-hydroxyglutaric acid and 3-methyl-1,2,3-butanetricarboxylic acid, which have only recently been elucidated. The characteristic molecular distribution of the fatty acids with a strong even/odd number carbon preference indicates a biological origin, while the presence of isoprene and terpene secondary organic aerosol products suggests that the photooxidation of BVOCs contributes to aerosol formation at this site. The sum of the median concentrations of the isop...Continue Reading

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Citations

Apr 22, 2011·Physical Chemistry Chemical Physics : PCCP·Richard IannoneAllan K Bertram
Jul 6, 2012·Journal of Environmental Monitoring : JEM·Alexandre Caseiro, César Oliveira
Jan 5, 2014·Environmental Science and Pollution Research International·M AlierB L van Drooge
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Sep 10, 2017·Environmental Science and Pollution Research International·Dimitra BallaConstantini Samara
Oct 5, 2018·Physical Chemistry Chemical Physics : PCCP·Ya-Juan HanWei Huang
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Feb 13, 2010·Inhalation Toxicology·Jacob D McDonaldEladio M Knipping
Oct 13, 2018·The Science of the Total Environment·Min SongXuran Li
Aug 14, 2009·Environmental Science & Technology·Ivan KourtchevWilly Maenhaut
Aug 29, 2019·The Journal of Physical Chemistry. B·Agata KołodziejczykRafał Szmigielski

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