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天津近岸海域表层沉积物中PAHs污染特征及风险

南炳旭 王丽平 刘录三 王安利 周 娟 廖绍安

南炳旭, 王丽平, 刘录三, 王安利, 周 娟, 廖绍安. 天津近岸海域表层沉积物中PAHs污染特征及风险[J]. 环境科学研究, 2014, 27(11): 1323-1330.
引用本文: 南炳旭, 王丽平, 刘录三, 王安利, 周 娟, 廖绍安. 天津近岸海域表层沉积物中PAHs污染特征及风险[J]. 环境科学研究, 2014, 27(11): 1323-1330.
NAN Bing-xu, WANG Li-ping, LIU Lu-san, WANG An-li, ZHOU Juan, LIAO Shao-an. Pollution Characteristics and Risk Assessment of Polycyclic Aromatic Hydrocarbons in the Surface Sediments of Tianjin Coastal Area, China[J]. Research of Environmental Sciences, 2014, 27(11): 1323-1330.
Citation: NAN Bing-xu, WANG Li-ping, LIU Lu-san, WANG An-li, ZHOU Juan, LIAO Shao-an. Pollution Characteristics and Risk Assessment of Polycyclic Aromatic Hydrocarbons in the Surface Sediments of Tianjin Coastal Area, China[J]. Research of Environmental Sciences, 2014, 27(11): 1323-1330.

天津近岸海域表层沉积物中PAHs污染特征及风险

基金项目: 中央级公益性科研院所基本科研业务费专项(2012-YSKY-10,GYK5091301);国家环境保护公益性行业科研专项(201309007)

Pollution Characteristics and Risk Assessment of Polycyclic Aromatic Hydrocarbons in the Surface Sediments of Tianjin Coastal Area, China

  • 摘要: 为掌握渤海湾天津段多条河流入海区和海滨旅游度假区的近岸海域表层(0~5 cm)沉积物中PAHs(多环芳烃)的污染状况,对该区域表层沉积物中16种US EPA(美国国家环境保护局)优先控制PAHs的分布特征及其来源进行了调查和分析,并评估了其潜在生态风险和概率致癌风险. 结果表明:渤海湾天津近岸海域表层沉积物中w(PAHs)(16种PAHs质量分数之和,以干质量计)为23.9~672.8 ng/g,平均值为228.1 ng/g. 表层沉积物中PAHs的污染程度与历史调查结果相比有所加剧,并且呈复合型污染,在天津港港区外海域主要为石油制品污染,在研究区域南部则主要源于燃煤和生物质的不完全燃烧. 风险评估结果表明,海河入海口附近和研究区域北部存在潜在生态风险;研究区域内概率致癌风险处于较低水平,∑7TEQBaP(7种强致癌PAHs的苯并芘毒性当量浓度之和)占∑16TEQBaP〔16种PAHs的苯并芘毒性当量浓度之和〕的96.8%,其中二苯并蒽的致癌风险最大,其次为苯并芘.

     

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  • 收稿日期:  2013-12-01
  • 修回日期:  2014-03-15
  • 刊出日期:  2014-11-25

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