| 天津污灌区苯并（a）芘、荧蒽和菲生态毒性的风险表征 |
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| 引用本文： | 王喜龙,沈伟然,等.天津污灌区苯并（a）芘、荧蒽和菲生态毒性的风险表征[J].城市环境与城市生态,2002,15(4):10-12. |
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| 作者姓名： | 王喜龙 沈伟然 |
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| 作者单位： | [1]北京大学城市与环境学系，地表过程分析与模拟教育部重点实验室，北京100871 [2]天津市环境保护局，天津300191 |
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| 摘 要： | 运用概率风险评价方法表征和比较了天津污灌区3种多环芳烃对生物影响的风险性。根据各物质的环境暴露浓度和相应急性毒性值的累计概率分布曲线估计了各物质相对风险性的大小。采用联合概率曲线方式比较了不同暴露概率水平条件下3种多环芳烃的相对风险。结果表明，该地区目前菲的总体风险性高于另两种化合物，苯并（a)芘的总体风险性最低。而低暴露风险条件下（受威胁生物不超过20％），苯并（a)芘的风险较大，菲次之，荧蒽风险相对较低。
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| 关 键 词： | 天津污灌区 苯并（a）芘 荧蒽 菲 生态毒性 风险表征 风险评价 多环芳烃 污水灌溉 土壤污染 |
Risk Assessment of Ecotoxicity of Benzo(a)pyrene, Fluorethene and Phenanthrene in Tianjin Wastewater Irrigated Area |
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| WANG Xi-long ,XU Fu-liu ,LI Ben-gang ,CAO Jun ,TAO Shu ,SHEN Wei-ran ,ZHAO Xi-mei.Risk Assessment of Ecotoxicity of Benzo(a)pyrene, Fluorethene and Phenanthrene in Tianjin Wastewater Irrigated Area[J].Urban Environment & Urban Ecology,2002,15(4):10-12. |
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| Authors: | WANG Xi-long XU Fu-liu LI Ben-gang CAO Jun TAO Shu SHEN Wei-ran ZHAO Xi-mei |
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| Institution: | WANG Xi-long 1,XU Fu-liu 1,LI Ben-gang 1,CAO Jun 1,TAO Shu 1,SHEN Wei-ran 2,ZHAO Xi-mei 2 |
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| Abstract: | A probability risk assessment method was applied for characterizing ecotoxicity of three PAHS to various species. The relative risk of these chemicals was also investigated based on cumulative probability distribution curves, which were generated based on both exposure and acute toxicity data. Risk at different exposure levels was compared using joint probability curves. The results indicated that among the three PAHs studied, overall risk of phenanthrene is the highest, benzo(a)pyrene is the lowest. While at the lower exposure level (percent of species affected less than 20%), risk of benzo(a)pyrene is higher than that of the other two chemicals. |
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| Keywords: | risk assessment PAHs wastewater irrigation |
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