蒋丹烈;胡霞林;尹大强;

• 1:同济大学环境科学与工程学院长江水环境教育部重点实验室

摘要(Abstract)：

多环芳烃(PAHs)具有高的疏水性,在水体中优先分布于沉积物。采用物种敏感性分布法(SSDs法),依据水生生物慢性毒性数据计算5%物种危害浓度(HC5);并结合欧盟委员会风险评价技术导则(TGD)进而得到沉积物预测无效应浓度(PNECsed),以报道的太湖的沉积物中浓度数据作为预测环境浓度(PECsed);用商值法PECsed/PNECsed进行风险表征,定量分析太湖沉积物中6种PAHs的水生态风险。分析结果表明:6种PAHs的HC5分别为:苯并[a]芘1.026μg.L-1、芘4.553μg.L-1、荧蒽1.940μg.L-1、蒽0.930μg.L-1、芴11.045μg.L-1、萘2.936μg.L-1;萘、蒽、芴和荧蒽为沉积物中具有风险的物质,风险排序为萘>荧蒽>蒽>芴。另外,太湖沉积物2009年6种PAHs的水生态风险小于2004年和2007年。本研究为太湖沉积物PAHs生态基准的建立提供了科学依据和方法。

关键词(KeyWords)： 物种敏感性分布法;生态风险评价;多环芳烃

Abstract:

Keywords:

基金项目(Foundation): 国家水体污染控制与治理科技重大专项经费资助(2008ZX07421-001);; 国际科技合作计划资助(2010DFA91800)

作者(Author): 蒋丹烈;胡霞林;尹大强;

Email:

DOI:

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