摘要
根据2013年象山港及其邻近海域的环境现状调查结果,分析了表层沉积物中重金属Cu、Pb、Zn、Cd、Hg和As的水平分布特征。结果表明,Cu、Pb、Zn、Hg水平分布特征相似,高值区出现在B区(黄墩港)、E区(西沪港)和G区(港口),A区(铁港)为低值区,与海区底质类型相关;而Cd的分布特征与Cu相反;As表现为港内低、港中和港口高的分布特点。采用潜在生态危害指数法对研究海域表层沉积物中6种重金属污染水平进行了评价,发现Cd的潜在生态风险危害程度较大,大部分区域已达到较严重的危害程度,是研究海域的主要环境风险因子之一。
According to the results of the 2013 environmental inventory survey of Xiangshan Bay and its territorial sea,this paper analyzes the horizontal distribution characteristics of Cu,Pb,Zn,Cd,Hg,and As in surface sediments.The results showed that the horizontal distribution of Cu,Pb,Zn and Hg is similar,its high values appeare in the regions of B（Huangdun Harbor）、E（Xihu Harbor）and G（the mouth of the bay）,while region A（Tie Harbor）is with low values,which may be related with the sediments types of the study area.The distribution of Cd is contary to that of Cu,and the characteristics of distribution of As are low-level inside the bay and high-level in the center and the mouth of the bay.The paper assessed the pollution of 6kinds of heavy metals in surface sediments of the study area by using the Hakanson potential ecological risk index method and we found out that Cd has a higher potential ecological risk index than the others,which has already reached a severe degree in most regions.Cd has become one of the major environmental risk factors in the Xiangshan Bay area.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2016年第4期71-78,共8页
Periodical of Ocean University of China
基金
国家自然科学基金项目(41176142)
国家海洋公益性行业科研专项经费项目(201105009)资助~~
关键词
象山港
重金属
表层沉积物
水平分布
污染评价
Xiangshan Bay
heavy metal
surface sediments
horizontal distribution
pollution assessment
