广西防城珍珠港珍珠养殖区表层沉积物重金属污染评价

Assessment on the heavy metals pollution in surface sediments of pearl culture zone of Pearl Bay in Fangcheng City

分析了防城珍珠港养殖区表层沉积物中重金属(Cu、Pb、Zn、Cd、Hg、As)含量的分布特征,并采用海洋沉积物质量国家标准和地积累指数法评价了该养殖区沉积物中重金属污染。结果表明:该养殖区表层沉积物重金属含量均达到一类海洋沉积物质量标准;重金属污染程度基本上属无污染。

The distribution characteristics of heavy metals（Cu,Pb,Zn,Cd,Hg）in surface sediments of Pear Bay culture zone have been analyzed.National marine sediment quality standard and index of geo-accumulation were used to assess heavy metals pollution degree.The results showed that the contents of the heavy metals in surface sediments of the culture zone were the first-class standard of the marine sediment quality.The heavy metals pollution was essentially non-polluted.