青岛海洋倾倒区沉积物重金属污染及其生态风险评价

Evaluation on heavy metal contamination and potential ecological risk in Qingdao dump site

根据2002年的青岛倾倒区海域表层沉积物中重金属监测数据,采用单因子指数法和Hakanson生态风险指数法对其重金属污染特征及潜在生态风险性进行了分析和评价,结果表明:该海域重金属综合污染程度和潜在生态风险性均较低,倾倒区外南部海域有Cu和Cd污染的迹象,该海域主要潜在生态风险因子为Hg和Cd。

Based on the monitoring data of the heavy metals in 2002, the pollution status and the potential ecological risk of the heavy metals in Qingdao dump site were studied using the index technique of single factor and Hakanson ecological risk index . The results showed that the integrated contamination level of the heavy metals and the potential ecological risk of the heavy metal were low in sedi-ments of qingdao dump site, but the contents of copper and cadmium in south of dump site exceed the natural background content, and the hydrargyrum and cadmium are key factors of the potential ecological risk in dump site.