鄱阳湖饶河入湖段底泥中重金属的污染特性

Characteristics of Heavy Metals Contaminated Sediments in Raohe River of Poyang Lake

饶河是鄱阳湖流域的五大水系之一,是鄱阳湖流域重金属污染最严重的区域之一.该文对鄱阳湖饶河入湖段设置了两个采样点,对样点中的底泥、土壤样品进行了重金属元素Cu、Zn、Pb、Cd的分析与测定,根据测定结果,分析了饶河入湖段重金属元素Cu、Zn、Pb、Cd污染的主要特性.研究结果表明,鄱阳湖饶河入湖段的重金属污染特性与土壤或底泥中的pH值负相关,pH值越低,土壤中的重金属含量更高;且各元素之间呈现出一定的相关性,即Cu、Zn、Pb三种元素之间呈极显著正相关,这表明在鄱阳湖饶河入湖段呈现出重金属复合污染的趋势.

Raohe is one of the five river systems and the most seriously heavy metals contaminated areas of Poyang Lake valley. For the environmental protection purpose, upper layer sediment and the riverside soil what were from 2 different locations in Raohe River of Poyang Lake were sampled. The concentration of the heavy metals included Cu,Zn,Pb and Cd in the samples were determined. According to the concentration of heavy metals in the samples, analyzed the characteristics of Cu,Zn,Pb,Cd in sediment and soil. The results indicated that the characteristics of heavy metals Cu,Zn,Pb and Cd in Raohe River of Poyang Lake were accordance with the pH value, the concentrations of Cu, Zn, Pb, Cd were negative correlative to the pH value, and all the heavy metals of Cu,Zn,Pb,Cd emerged certain correlation , it was that Cu, Zn, Pb emerged notability positive correlation, it indicated that some kinds of heavy metals emerged complex contaminations in Raohe River of Poyang Lake.