Heavy Metal Pollution in Surface Sediment of Jinzhou Bay and Ecological Risk Assessment Based on Triangular Fuzzy Number
详细信息
- 责任者：Wang Yan (Key Lab. of Marine Environmental Science and Ecology ; Ministry of Education ; Ocean University of China ; Qingdao 266100 ; China) ; Liu Ruhai
- 刊名：Oceanologia et Limnologia Sinica
- 出版年：2013
- 卷期：44(4)
- 关键词：海洋沉积物 ; marine sediments ; 重金属 ; heavy metals ; 辽东湾 ; Liaodong Bay
- 页码：p.860-865
- 图表：illus., 8 tables, 21 refs.
- 分类号：0200
- issnNo：ISSN0029-814X
- isbnNo：CN37-1149/P
摘要
Twenty surface sediments were collected in Jinzhou Bay,and the contents of Pb,Cr,Zn,Cu,As,and Hg were determined.Data analysis showed that the coefficient of variation of Hg was the largest,indicating that the Hg pollution was serious.The pollution level of heavy metals except of Cr decreased with distance to seashore,and the source of sediments was an important factor for the distribution of heavy metals.The study area could be divided into three zones based on cluster analysis,and the triangular fuzzy number was used to determine heavy metals contents.Ecological risk assessment showed that the order of heavy metal pollution was Hg>Zn>Cu>Pb>As>Cr(Credibility A=0.90),and Hg and Zn in three zones have reached a high degree of pollution.As Hg has high biological toxic,ecological risks were high in local zone.
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