Pollution characteristics of ambient PM2.5-bound PAHs and NPAHs in a typical winter time period in Taiyuan |
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| Authors: | Rui-Jin Li, Xiao-Jing Kou, Hong Geng, Chuan Dong, Zong-Wei Cai |
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| Affiliation: | a Institute of Environmental Science, Shanxi University, Taiyuan 030006, China;b State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong Special Administrative Region, China |
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| Abstract: | The pollution characteristics of ambient fine particulate matter(PM2.5) containing polycyclic aromatic hydrocarbons(PAHs) and nitrated PAHs(NPAHs) in samples collected during a typical winter time period in Taiyuan of China were investigated.The obtained results revealed that the mean mass concentrations of PM2.5,SPAHs(sum of 16 PAHs) and SNPAHs(sum of 3 NPAHs) on PM2.5were161.4 mg/m3,119.8 ng/m3and 0.446 ng/m3,respectively.Diagnostic ratios of PAHs and NPAHs implied that coal consumption might be the main source of the PM2.5pollution.The measured PM2.5mass concentrations,BaP equivalent toxicity(28.632 ng/m3) and individual carcinogenicity index(3.14 10 5) were much higher than those of the recommended safety standards. |
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| Keywords: | PM2.5 PAHs NPAHs Taiyuan |
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