title: [Emission characteristics of polycyclic aromatic hydrocarbons in exhaust particles from a diesel car].
abstract: The emission characteristics of polycyclic aromatic hydrocarbons (PAHs) in exhaust particles from a diesel car were studied. In the experiment, pure diesel fuel and B10 fuel with a biodiesel blend ratio of 10% were chosen. The gaseous emissions of HC, CO and NO(x) under New European Driving Cycle (NEDC) were measured, and exhaust particulate matter (PM) samples were analyzed by gas chromatography-mass spectrometry. The emission characteristics of PAHs in exhaust particles were highlighted. The results show that the emission concentrations of HC, CO, NO(x), and PM decreased when the diesel car used B10 fuel. Fluoranthene and pyrene were dominant in PAHs of PM emissions when the diesel car used pure diesel or B10 fuel. Compared to pure diesel, there was a slight increase in low-ring PAHs emissions when the diesel car used B10 fuel. On the contrary, PAHs emissions in middle and high-ring declined significantly. Besides, Benzo [ a] pyrene equivalent toxicity analysis results show that the BEQs of B10 fuel decreased by 21.6% compared to pure diesel. That means the toxicity of PAHs in exhaust particles declined when the diesel car used biodiesel fuel.
authors.affiliation: School of Automobile, Tongji University, Shanghai 201804, China. tpq2000@163.com
authors.forename: Pi-Qiang
authors.initials: PQ
authors.lastname: Tan
authors.forename: Zhou
authors.initials: Z
authors.lastname: Zhou
authors.forename: Zhi-Yuan
authors.initials: ZY
authors.lastname: Hu
authors.forename: Di-Ming
authors.initials: DM
authors.lastname: Lou
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D056804:Biofuels / Q000032:analysis*; D002681:China; D004784:Environmental Monitoring; D010316:Particle Size; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D001335:Vehicle Emissions / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D056804:Biofuels; D011084:Polycyclic Aromatic Hydrocarbons; D001335:Vehicle Emissions