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《Geochimica》 2004-03
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Environmental geochemistry of heavy metals in bottom sediments of the river mouths in Liaodong Bay

ZHOU Xiu yan1, WANG En de1, LIU Xiu yun2, WANG Wu ming1(1. School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China; 2. Liaoning Institute of Environmental Science, Shenyang 110031, China)  
The content of cadmium, lead, copper and zinc in the bottom sediments of the river mouths in Liaodong Bay were quantitatively analyzed. Cd, Pb and Zn are the main heavy metal pollutants. The average content of Cd in the sediments of the most river mouths reaches 1.16 mg/kg, which exceeds the standard of Class Ⅲ of the soil environment quality. The average content of Zn is 105.28 mg/kg, which exceeds the standard of Class I of the soil environment quality. The degree of pollution is estimated by the geoaccumulation index, and the results show that the pollution is more serious on northwestern and northern river mouths of Liaodong Bay. The sequence of degree of pollution is as follows: Wuli River in Huludao City the north estuary of Daling River estuary of Liaohe River estuary of Shuangtaizi River. Comparing with the historic data, the average contents of the four kinds of heavy metal increased.
【Fund】: 辽宁省环境科学研究院资助项目;; 辽宁省环境保护局重点科研项目(辽环发[2002]92号)
【CateGory Index】: X142
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