Fine particle emission from gasoline and diesel motor vehicles is a major source of particulate matter air pollution, especially in urban areas.  In this study, organic speciation of fine particulate matter (PM2.5, d=2.5 �m) was carried out on 18 light-duty vehicles tested on a chassis dynamometer at the New York Department of Environmental Conservation (NYDEC) testing facility over different driving cycles.   A detailed chemical profile for organic compound mass emissions was constructed for the vehicle exhaust particulates collected from each vehicle and fuel type.  More than 100 organic molecular marker compounds quantified by gas chromatograph/mass spectrometry (GC/MS).  The major organic components identified were n-alkanes,  PAH (polycyclic aromatic hydrocarbons), hopane, sterane, n-alkanoic acids and benzoic acids.  The detailed chemical profiles corresponding to the fine organic PM will provide new apportionment and modeling tools to distinguish organic particulate pollution from gasoline and diesel powered vehicles.

Organic chemical composition of PM<sub>2.5 </sub>in vehicular exhaust: Gasoline and diesel light duty vehicles

244th National Meeting (2012)

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Organic chemical composition of PM2.5 in vehicular exhaust: Gasoline and diesel light duty vehicles

Organic chemical composition of PM_2.5in vehicular exhaust: Gasoline and diesel light duty vehicles