Polycyclic aromatic hydrocarbons associated with total suspended particles and surface soils in Kunming, China: distribution, possible sources, and cancer risks
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- 作者：Xiaoxia Yang ; Dong Ren ; Wenwen Sun…
- 关键词：Polycyclic aromatic hydrocarbons ; Total suspended particles ; Surface soils ; Source apportionment ; Potential risk
- 刊名：Environmental Science and Pollution Research
- 出版年：2015
- 出版时间：May 2015
- 年：2015
- 卷：22
- 期：9
- 页码：6696-6712
- 全文大小：1,109 KB
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Jiang YF, Wang XT, Wang F, Jia Y, Wu MH, Sheng GY, Fu JM (2009) L - 作者单位：Xiaoxia Yang (1)
Dong Ren (1)
Wenwen Sun (1)
Xiaoman Li (1)
Bin Huang (1)
Rong Chen (1)
Chan Lin (1)
Xuejun Pan (1)
1. Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650500, People’s Republic of China - 刊物类别：Earth and Environmental Science
- 刊物主题：Environment
Environment
Atmospheric Protection, Air Quality Control and Air Pollution
Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution
Industrial Pollution Prevention - 出版者：Springer Berlin / Heidelberg
- ISSN：1614-7499
文摘
The concentrations, distribution, possible sources, and cancer risks of polycyclic aromatic hydrocarbons (PAHs) in total suspended particles (TSPs) and surface soils collected from the same sampling spots were compared in Kunming, China. The total PAH concentrations were 9.35-5.01?ng/m3 and 101.64-93.30?ng/g dry weight (d.w.), respectively, in TSPs and surface soils. Fluoranthene (FLA), pyrene (PYR), chrysene (CHR), and phenanthrene (PHE) were the abundant compounds in TSP samples, and phenanthrene (PHE), fluorene (FLO), fluoranthene (FLA), benzo[b]fluoranthene (BbF), and benzo[g,h,i]perylene (BghiP) were the abundant compounds in surface soil samples. The spatial distribution of PAHs in TSPs is closely related to the surrounding environment, which varied significantly as a result of variations in source emission and changes in meteorology. However, the spatial distribution of PAHs in surface soils is supposed to correlate with a city’s urbanization history, and high levels of PAHs were always observed in industry district, or central or old district of city. Based on the diagnostic ratios and principal component analysis (PCA), vehicle emissions (especially diesel-powered vehicles) and coal and wood combustion were the main sources of PAHs in TSPs, and the combustion of wood and coal, and spills of unburnt petroleum were the main sources of PAHs in the surface soils. The benzo[a]pyrene equivalent concentration (BaPeq) for the TSPs and surface soil samples were 0.16-.57?ng/m3 and 11.44-16.03?ng/g d.w., respectively. The incremental lifetime cancer risk (ILCR) exposed to particulate PAHs ranged from 10? to 10? indicating high potential of carcinogenic risk, and the ILCR exposed to soil PAHs was from 10? to 10? indicating virtual safety. These presented results showed that particle-bound PAHs had higher potential carcinogenic ability for human than soil PAHs. And, the values of cancer risk for children were always higher than for adults, which demonstrated that children were sensitive to carcinogenic effects of PAHs.