Characterization of PM(10) fraction of road dust for polycyclic aromatic hydrocarbons (PAHs) from Anshan, China.
Nineteen road dust samples were collected during 2005 in different parts of the urban area of Anshan, Liaoning Province, China, and 11 polycyclic aromatic hydrocarbons (PAHs) species were quantitatively analyzed using GC-MS. The results indicated that the total average concentration of PAHs over the investigated sites ranged from 48.73 to 638.26 microg/g, with a mean value of 144.25 microg/g, higher than the concentrations measured in previous studies. PAHs concentrations were higher with high molecular weight homologues (4-6 rings PAHs), accounting for 83.24-96.98%, showing combustion of petroleum fuels was a potential source. Organic carbon in road dust was considered one of the important factors that influenced the concentrations of PAHs in this study, and it was found that concentrations of total PAHs were correlated with those of organic carbon in road dust. The results of diagnostic ratios analysis showed traffic emission (gasoline or diesel) was one of the most important sources of road dust PAHs. Principal component analysis (PCA) indicated that the major sources of road dust PAHs might be emission from traffic, steel industry, cooking and coal combustion.
Han
Bin
B
State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Weijin Road 94, Tianjin, China.
Bai
Zhipeng
Z
Guo
Guanghuan
G
Wang
Fang
F
Li
Fu
F
Liu
Qiuxin
Q
Ji
Yaqin
Y
Li
Xiang
X
Hu
Yandi
Y
D000393:Air Pollutants / Q000032:analysis*; D000395:Air Pollutants, Occupational / Q000032:analysis; D000397:Air Pollution / Q000032:analysis; D000465:Algorithms; D002244:Carbon / Q000032:analysis; D002273:Carcinogens / Q000032:analysis*; D002681:China; D004391:Dust / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D008669:Metallurgy; D008970:Molecular Weight; D052638:Particulate Matter / Q000032:analysis*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D025341:Principal Component Analysis; D011786:Quality Control; D018570:Risk Assessment; D001335:Vehicle Emissions / Q000032:analysis
D000393:Air Pollutants; D000395:Air Pollutants, Occupational; D002273:Carcinogens; D004391:Dust; D052638:Particulate Matter; D011084:Polycyclic Aromatic Hydrocarbons; D001335:Vehicle Emissions; D002244:Carbon