【摘要】 在唐岛湾岔河入海口三角洲采集表层沉积物,采用X射线荧光光谱仪分析法检测Cu、Zn、Pb、Cd、Hg、As、Cr等共计7种重金属元素的含量。利用地累积指数法(J_geo)及潜在生态危害系数法（ERI）对其重金属分布特征、潜在生态危害进行分析评价,结果表明:岔河入海口地区重金属污染整体较低,呈现出南北高中部低,且北部高于南部的分布特征,三角洲北部靠近人类活动密集区处于中等至较高重金属污染状态。更多还原

【Abstract】 Based on the surface sediment samples from Cha River Delta,Tangdao Bay,the contents of Cu,Zn,Pb,Cd,Hg,As,Cr were tested by using XRF.The study conducted analysis and evaluation of the distribution and potential ecological risk of heavy metal,using geoaccumulation index(I_gco),potential ecological risk index（ERI）.The result showed that the overall contamination level were low in the surface sediment samples,which high in the north,low in the south and middle.The middle-high level contamination area is located in the northern part of the delta which is densely-populated areas of human activities.更多还原