信江(土桥断面)水系沉积物中重金属污染研究

Research on heavy metal pollution in the surficial sediment of Xinjiang river system

2012年9月7日对信江(土桥断面)表层水系沉积物重金属含量进行监测分析,采用地质累积指数对信江沉积物重金属富集现状进行研究,结果表明:信江(土桥断面)表层水系沉积物受到较严重的重金属污染,各重金属元素的污染程度依次为:Cd>Sb>Cu>Cr>Zn>Mn>Ni>Co>Mo,其中Cd表现为严重污染,Sb为偏重度污染,Cu为中度污染,Cr、Zn、Mn为偏中度污染,Ni、Co、Mo为轻度污染。针对信江鹰潭段河流沉积物中重金属的累积机理,建议通过改善区域水文条件,控制污染物排放等措施加以控制和治理。

Applied the index of C, eoaceumulation to assess heavy metal pollution in the stream sediment of Xinjiang River, the results shows that： the surfieial sediment of Xinjiang River suffer serious heavy metal pollution. The pollution degree is： Cd 〉 Sb 〉 Cu 〉 Cr 〉 Zn 〉 Mn 〉 Ni 〉 Co 〉 Mo, where Cd manifestations of severe pollution, Sb is slightly heavy pollu- tion, Cu is moderate pollution, Cr,Zn,Mn partial moderate pollution, Ni,Co,Mo light pollution. Response to the heavy metal pollution in the stream sediment accumulation mechanism of Xinjiang River, Yintan area, proposed by improving the regional hydrological conditions, control the pollutant emissions and other measures to control and management.