| 天津地区冬季总悬浮颗粒物中PAHs污染特征 |
| 摘要点击 894 全文点击 1290 投稿时间：2003-09-12 修订日期：2003-11-23 |
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| 中文关键词 多环芳烃 总悬浮颗粒物 毒性等效因子 天津地区 |
| 英文关键词 polycyclic aromatic hydrocarbons total suspended particles toxicity equivalent factors Tianjin area |
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| 中文摘要 |
| 采集并分析了天津不同区县13个样点冬季总悬浮颗粒物(TSP)中16种优控多环芳烃(PAHs)含量.结果表明不同样品间PAHs含量差异明显,东部开发区和中北部区县含量明显高于其它地区,大港油田的颗粒物中PAHs含量很低,市区、南部区县和北部山区居中.根据毒性等效因子计算了等效浓度,不同样品PAHs总等效浓度差异不大,占总浓度50%的高环PAHs毒性贡献达90%. |
| 英文摘要 |
| Total suspended particles (TSP) samples from 13 stations in Tianjin were collected and analyzed for polycyclic aromatic hydrocarbons (PAHs) during 2002 winter. There was significant difference in total PAH concentration among 13 samples. TSP samples from the east Economic Development Area and mid north districts had the highest contents of PAHs, while Dagang Oil Field had the lowest PAH content. The urban area, south district, and Jixian county had the moderate contents of PAHs. Based on the measured concentration of the PAHs, BaP equivalent (BaPeq) were derived based on Toxicity Equivalent Factors (TEFs) of the PAHs. The total BaPeq values were similar among the samples. The contribution of PAHs with five or six rings contributed 90% of the total toxicity, while they accounted for only 50% of the total concentration. |
