【摘要】 本文研究了湘江衡阳段26个表层沉积物中5种重金属(Cd,Cu,Pb,Zn和Cr)的分布特征,并采用潜在生态危害指数法进行初步评价。研究结果显示,湘江衡阳段沉积物呈现出以Cd为主的多种重金属复合污染特征,多种重金属的综合潜在生态风险指数表明大部分研究区域水体面临很高的生态风险。更多还原

【Abstract】 The occurrence and distribution of 5 heavy metals,Cd,Cu,Pb,Zn and Cr in 26 sediments collected from Xiangjiang River(Hengyang section) were analyzed.Meanwhile the potential ecological risks of these heavy metals were calculated and assessed using Lars Hanson method based on data achieved in this study.The results indicated that Xiangjiang River(Hengyang section) was polluted by these heavy metals with Cd as the main component,and high ecological risks were found in most of the sampling sites from the studied area.更多还原