【摘 要】
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Ten nitrated polycyclic aromatic hydrocarbons(nPAHs)and 4 oxygenated polycyclic aro-matic hydrocarbons(oPAHs)in fine particulate matter(PM2.5)samples from Mount Tai were analyzed during summer(June to August),2015.During the observation campaign,the mean
【机 构】
：
School of Environmental Science and Safety Engineering,Tianjin University of Technology,Tianjin 3003
论文部分内容阅读
Ten nitrated polycyclic aromatic hydrocarbons(nPAHs)and 4 oxygenated polycyclic aro-matic hydrocarbons(oPAHs)in fine particulate matter(PM2.5)samples from Mount Tai were analyzed during summer(June to August),2015.During the observation campaign,the mean concentration of total nPAHs and oPAHs was 31.62 pg/m3 and 0.15 ng/m3,respectively.Two of the monitored compounds,namely 9-nitro-anthracene(9N-ANT)(6.86 pg/m3)and 9-fluorenone(9FO)(0.05 ng/m3)were the predominant compounds of nPAHs and oPAHs,re-spectively.The potential source and long-range transportation of nPAHs and oPAHs were investigated by the positive matrix factorization(PMF)method and the potential source contribution function(PSCF)methods.The results revealed that biomass/coal burning,gaso-line vehicle emission,diesel vehicle emission and secondary formation were the dominant sources of nPAHs and oPAHs,which were mainly from Henan province and Beijing-Tianjin-Hebei region and Bohai sea.The incremental life cancer risk(ILCR)values were calculated to evaluate the exposure risk of nPAHs and oPAHs for three group people(infant,children and adult),and the values of ILCR were 7.02×10-10,3.49×10-9 and 1.41×10-8 for in-fant,children and adults,respectively.All these values were lower than the standard of EPA(Environmental Protection Agency)(＜10-6),indicating acceptable health risk of nPAHs and oPAHs.
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