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This paper aims to discuss the influence of different geochemical backgrounds selected for assessing the metal pollution level in ocean floor sediments by using Igeo. As we know, Muller index of geo-accumulation or Igeo has been used as a widely recognized index for metal pollution indicating the contamination level found in sediments. To reduce such influence, it is suggested that the geochemical backgrounds selected be made in close relation to the sediment itself. In order to find the accurate content of Cd, Pb, Cu and Zn in the sediments of river mouths in Liaodong Bay, the author of this paper has made a very careful quantitative analysis on the samples gained from the field investigation, in which the geoaccumulation index was used to evaluate the heavy metal pollution in the sediments of the Inter-tidal in Liaodong Bay. The results of the author's analysis on the contamination degree of such heavy metals have shown that Cd was in high level while Pb, Cu and Zn stand in the middle. The results also showed that heavy metals pollution proves rather serious in the river mouths of Liaodong Bay. The exact pollution degrees in the following sites are respectively: the pollution in Wulihe River mouth in Huludao city is more serious than Dalinghe River mouth and Liaohe River mouth, with the latter being more serious than that of Shuangtaizihe River mouth, Yongninghe River mouth, Xiongyuehe River mouth, Liuguhe River mouth, Shihe River mouth and Zhimaowan in turn.
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Basic Information:
China Classification Code:X821
Citation Information:
[1]ZHOU Xiu-yan, WANG En-de (Resources and Civil Engineering, Northeastern University, Shengyang 110004, China).Method on how to apply index of geoaccumulation to evaluate heavy metal pollution as result of inter-tidal sediments in Liaodong bay[J].Journal of Safety and Environment,2004(02):22-24.
Fund Information:
辽宁省环境保护研究院开放实验室基金资助项目 (编号 :辽环发 [2 0 0 2 ] 92号 )
2004-04-25
2004-04-25