桑沟湾海域表层沉积物重金属含量和污染评价

Distribution and environment assessment of heavy metals in surface sediments of the Sanggou Bay and adjacent area

摘要: 分析了山东省荣成市东部桑沟湾及邻近海域200个站位的表层沉积物样品重金属元素（As、Cd、Cr、Cu、Hg、Pb、Zn）含量分布特征，采用不同的评价方法，研究了重金属元素对环境的污染情况。结果表明，桑沟湾及邻近海域表层沉积物中多数重金属元素含量由湾内向周围降低，As、Cd、Cr、Cu、Hg、Pb、Zn平均含量分别为6.51、0.11、64.86、18.05、0.015、27.74、75.21 μg/g。海底表层沉积物整体质量较好，重金属污染程度低，潜在生态风险程度低。

Abstract: Distribution characteristics of heavy metals (As, Cd, Cr, Cu, Hg, Pb, Zn) from 200 surface sediments in the Sanggou Bay and adjacent area in the northeastern Shandong Peninsula was analyzed and possible effects of heavy metals on the environment were discussed using different evaluation methods. Results show that the contents of most of heavy metals in the surface sediments decreased from the inner bay to the surrounding area. The average contents of As, Cd, Cr, Cu, Hg, Pb, and Zn were 6.51, 0.11, 64.86, 18.05, 0.015, 27.74, and 75.21 μg/g, respectively. The overall quality of surface sediment on the seabed is good, the overall pollution level of heavy metals is low, and the potential ecological hazard is slight.