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Comprehensive primary particulate organic characterization of vehicular exhaust emissions in France

Abstract : A study to characterize primary particulate matter (PM2.5 and PM10) from the French vehicular fleet was conducted during winter 2008, in a tunnel in Marseille, France. The carbonaceous fraction represents 70% of the aerosol mass and elemental carbon fraction (EC) represent 60% of the carbonaceous fraction. The organic carbon OC was characterized in term of its water soluble fraction, functionalization rate and HULIS content. Seventy trace organic compounds including alkanes, polycyclic aromatic hydrocarbons (PAH), petroleum biomarkers and carboxylic acids were also quantified, in order to determine an organic emission profile for chemical mass balance modeling studies. Such source profiles were still missing in Europe and particularly in France. The profile obtained in this study is consistent with profiles determined in tunnel or dynamometer studies performed in other countries during the last ten years. These results suggest that organic compounds profiles from vehicular exhaust emissions are not significantly influenced by the geographic area and are thus suitable for use in aerosol source apportionment modeling applied across extensive regions. The chemical profile determined here is very similar to those obtained for diesel emissions with high concentrations of EC relative to OC (EC/OC = 1.8) and low concentrations of the higher molecular weight PAH. These results are consistent with the high proportion of diesel vehicles in the French fleet (49%).
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Submitted on : Tuesday, July 6, 2010 - 10:10:30 AM
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Imad El Haddad, Nicolas Marchand, Julien Dron, Brice Temime-Roussel, Etienne Quivet, et al.. Comprehensive primary particulate organic characterization of vehicular exhaust emissions in France. Atmospheric environment, Elsevier, 2009, 43 (39), pp.6190-6198. ⟨10.1016/j.atmosenv.2009.09.001⟩. ⟨insu-00497880⟩



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