沈阳市细河底泥中重金属污染现状及特征分析

Analysis on status and characteristics of heavy metal pollution of sediment in Xi River in Shenyang

为有效治理沈阳市细河水环境重金属污染,有针对性地找到造成其重金属污染现状的根源,该文对沈阳市细河流域内工业企业排放现状和细河(张士段)14个点位的底泥中重金属污染情况进行监测和研究。结果表明,细河底泥中8种重金属平均质量浓度排序为锌>锰>铜>铬>铅>砷>镉>汞,空间变化趋势表明8种重金属污染物在流域14个点位内都有不同程度的积累,重金属浓度相关性分析表明底泥中重金属来源具有多源性。该研究对查找沈阳市水污染原因,精准行业溯源以及工业企业精细化排污管控具有指导意义。

The discharge status of industrial enterprises in Xi River basin and the heavy metal pollution in the sediment of 14 sites in Zhangshi segment were monitored and studied,for the purpose of controling the heavy metal pollution and finding out the sources of heavy metal pollution in Xi River in Shenyang.The results showed that the average mass concentration of eight heavy metals in sediment of Xi River from the largest to the smallest were zinc>manganese>copper>chromium>lead>arsenic>cadmium>mercury.The spatial variation trend indicated that the eight heavy metal pollutants accumulated in different degrees in 14 sites in the basin.The correlation analysis of heavy metal concentrations demonstrated that the heavy metals in the sediment had multiple sources.This study has guiding significance for finding pollution causes,precise source tracing of industrial,and delicacy management of industrial enterprises.