Development of a gas chromatographic/ion trap mass spectrometric method for the determination of levoglucosan and saccharidic compounds in atmospheric aerosols. Application to urban aerosols.

We developed and validated a gas chromatographic/ion trap mass spectrometric method for the determination of levoglucosan and the related monosaccharide anhydrides, mannosan, galactosan and 1,6-anhydro-beta-D-glucofuranose in urban atmospheric aerosols collected on quartz fiber filters. The method is based on extraction with dichloromethane-methanol (80 : 20, v/v), trimethylsilylation, multiple reaction monitoring in the tandem mass spectrometric mode using the ion at m/z 217, and the use of an internal standard calibration procedure with the structurally related compound methyl beta-L-arabinopyranoside. In addition, the method allows the quantification of other saccharidic compounds, arabitol, mannitol, glucose, fructose, inositol and sucrose, which were found to be important in summer aerosols. The recovery of levoglucosan was estimated by spiking blank filters and was better than 90%. The precision evaluated by analyzing parts of the same filters was about 2% for the monosaccharide anhydrides and 7% for the other saccharidic compounds in the case of a winter aerosol sample, and the corresponding values for a summer aerosol sample were 5% and 8%. The method was applied to urban PM(10) (particulate matter of <10 microm aerodynamic diameter) aerosols collected at Ghent, Belgium, during a 2000-2001 winter and a 2001 summer episode and revealed interesting seasonal variations. While monosaccharide anhydrides were relatively more important during the winter season owing to wood burning, the other saccharidic compounds were more prevalent during the summer season, with some of them, if not all, originating from the vegetation.

[1]  M. Facchini,et al.  A simplified model of the water soluble organic component of atmospheric aerosols , 2001 .

[2]  Barbara J. Turpin,et al.  Measuring and simulating particulate organics in the atmosphere: problems and prospects , 2000 .

[3]  B. Simoneit,et al.  Organic tracers from biomass burning in atmospheric particulate matter over the ocean , 2000 .

[4]  D. Bassi,et al.  Simultaneous determination of soluble sugars and organic acids as their trimethylsilyl derivatives in apricot fruits by gas-liquid chromatography. , 1997, Journal of chromatography. A.

[5]  R. March,et al.  Determination of dioxins/furans and PCBs by quadrupole ion-trap gas chromatography-mass spectrometry. , 2000, Mass spectrometry reviews.

[6]  R. Reed,et al.  The osmotic role of mannitol in the Phaeophyta: an appraisal , 1985 .

[7]  M. Claeys,et al.  Carbonaceous aerosols and particulate organic compounds in Gent, Belgium, during winter and summer of 1998 , 1999 .

[8]  Christopher G. Nolte,et al.  Levoglucosan, a tracer for cellulose in biomass burning and atmospheric particles , 1999 .

[9]  M. Lemasle,et al.  Determination of polychlorodibenzo-p-dioxins and polychlorodibenzofurans by gas chromatography/tandem mass spectrometry and gas chromatography/triple mass spectrometry in a quadrupole ion trap. , 2001, Journal of mass spectrometry : JMS.

[10]  M. Claeys,et al.  Improved method for quantifying levoglucosan and related monosaccharide anhydrides in atmospheric aerosols and application to samples from urban and tropical locations. , 2002, Environmental science & technology.

[11]  Maria Cristina Facchini,et al.  Characterization of water‐soluble organic compounds in atmospheric aerosol: A new approach , 2000 .

[12]  M. Facchini,et al.  Water‐soluble organic compounds in biomass burning aerosols over Amazonia 1. Characterization by NMR and GC‐MS , 2002 .

[13]  M. Fraser,et al.  Using Levoglucosan as a Molecular Marker for the Long-Range Transport of Biomass Combustion Aerosols , 2000 .

[14]  R. Cary,et al.  Elemental Carbon-Based Method for Monitoring Occupational Exposures to Particulate Diesel Exhaust , 1996 .

[15]  J. Schauer,et al.  Highly polar organic compounds present in wood smoke and in the ambient atmosphere. , 2001, Environmental science & technology.

[16]  Jon Holmgren,et al.  Winter snow cover on the sea ice of the Arctic Ocean at the Surface Heat Budget of the Arctic Ocean (SHEBA): Temporal evolution and spatial variability , 2002 .

[17]  M. Claeys,et al.  Organic compounds in urban aerosols from Gent, Belgium: Characterization, sources, and seasonal differences , 2002 .

[18]  Jeanine M. Davis,et al.  Biosynthesis of Sucrose and Mannitol as a Function of Leaf Age in Celery (Apium graveolens L.). , 1988, Plant physiology.

[19]  M. Poore.  Levoglucosan in PM2.5 at the Fresno Supersite , 2002, Journal of the Air & Waste Management Association.

[20]  Gregory C. Roberts,et al.  Carbonaceous aerosol characterization in the Amazon basin, Brazil: novel dicarboxylic acids and related compounds. , 2000 .

[21]  B. Simoneit,et al.  Evaluating levoglucosan as an indicator of biomass burning in Carajás, amazônia: a comparison to the charcoal record 2 2 Associate editor: R. Summons , 2001 .