title: [Experimental study on the characteristics polycyclic aromatic hydrocarbon emissions of diesel engine burnt by different fuels].
abstract: The polycyclic aromatic hydrocarbons (PAHs) were measured by glass fiber filter and XAD-2 collector, ultrasonic extraction, soxhlet extraction and GC-MS analysis equipment. The exhaust emission of the DI single cylinder diesel engine fueled with pure diesel, biodiesel and biodiesel blends of 50% (B50) were measured. The results indicate that the particle-phase PAHs emissions of diesel engine decrease with the increasing of load. The gas-phase PAHs emissions of diesel engine decrease with the increasing of load in the beginning and it turns to going up with further increasing of load. The particle-phase and gas-phase PAHs emissions of biodiesel decrease and mean concentration are lower than that of diesel. The total PAHs emission concentration of biodisesl is 41.1-70.1 microg/m3. Total PAHs mean concentration emissions of biodiesel is decreased 33.3% than that of diesel. The mass proportion of three-ring PAHs emissions of those 3 kinds tested fuels is about 44% in the total PAHs. Biodiesel can increase the proportion of three-ring PAHs. Toxic equivalence of PAHs emissions of biodiesel are greatly lower than that of diesel. It is less harmful to human than diesel fuel.
authors.affiliation: School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China. wangzhong@ujs.edu.cn
authors.forename: Zhong
authors.initials: Z
authors.lastname: Wang
authors.forename: Yu-Guang
authors.initials: YG
authors.lastname: An
authors.forename: Guang-Ju
authors.initials: GJ
authors.lastname: Xu
authors.forename: Xiao-Zhe
authors.initials: XZ
authors.lastname: Wang
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D056804:Biofuels; D004784:Environmental Monitoring; D005742:Gasoline; D052638:Particulate Matter / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D001335:Vehicle Emissions / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D056804:Biofuels; D005742:Gasoline; D052638:Particulate Matter; D011084:Polycyclic Aromatic Hydrocarbons; D001335:Vehicle Emissions