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Global Journal of Environmental Science and Technology 2011, 1: 15
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Review Article
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Distribution and assessment of ΣDDT, ΣPCB and ΣPAH contaminants in sediments of western Bohai Bay and adjacent urban-industrial estuaries, China
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Huan Fenga, Haiping Zhaob, Weiguo Zhangc, Qingxue Lib, Xuchen Wangd, Michael P. Weinsteine, Lizhong Yuc, Jianhua Taof, Dekui Yuanf
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a Department of Earth and Environmental Studies, Montclair State University, Montclair, New Jersey 07043, USA
b Center of Analytical and Testing,Hebei University of Engineering, Handan 056038, PRC
c State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, PRC
d Department of Environmental, Earth and Ocean Science, University of Massachusetts at Boston, Boston, MA 02125, USA
e Institute of Sustainability Studies, Montclair State University, Montclair, New Jersey 07043, USA
f Department of Mechanics, Tianjin University, Tianjin 300072, PRC
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Abstract |
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In response to fast urbanization and industrial development in the Bohai rim, China, we selected the western Bohai Bay, the Haihe River estuary, the Yongding River estuary and the Tianjin Port to investigate the environmental impact on sediment quality and potential adverse biological effect on aquatic life. Sediment gravity cores (~40 - 1 m long) were collected from 12 stations in the study area during July 24 - 26, 2007, and analyzed for dichloro-diphenyl-trichloro-ethane (DDT), polychlorinated biphenyl (PCB) and polynuclear aromatic hydrocarbon (PAH) concentrations. We found that the concentrations ranged from n.d. (not detectable) - 144 ng g-l for SDDT, n.d. - 27.2 ng g-l for ΣPCB, and 11 - 8875 ng g-l for SPAH, and that stations in the estuaries and the Tianjin Port have relatively higher concentrations of organic contaminants than that in the western Bohai Bay. Hazard quotients (HQs) of SDDT, SPCB and SPAH suggest that DDT concentration may cause biological adverse effects in the study area, while PCB and PAH concentrations are not of serious concern at present. However, general increasing tends of the hazard quotients (HQs) of SDDT, SPCB and SPAH with 210Pbxs activity suggest that contaminations of SDDT, SPCB and SPAH increase with time in the recent decades.
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Keywords |
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Bohai Bay; Estuary; Sediment; Organic contaminants; Radionuclide; Assessment
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