向家坝库区沉积物中重金属的形态分布特征  

Speciation and Distribution Characteristics of Heavy Metals in Sediments of Xiangjiaba Reservoir Area

作　　者：文帅 Wen Shuai(School of Energy and Environmental Engineering,Hebei Engineering University,Handan Hebei 056038)

机构地区：[1]河北工程大学能源与环境工程学院,河北邯郸056038

出　　处：《山西化工》2023年第1期185-187,共3页Shanxi Chemical Industry

摘　　要：长期以来,重金属污染一直是治理环境中最棘手的难题之一。对河流沉积物而言,其中的重金属污染因具有累积性强、危害周期长、治理难等特点,所以沉积物中的重金属成为了国内外研究人员重点关注的对象。世界各主要河流沉积物都受到不同程度的重金属污染。向家坝水库是金沙江下游梯级水库群的最后一级,对长江下游重金属的富集和时空迁移有着重要影响。本文以向家坝库区沉积物中重金属为主要研究对象,以BCR连续提取法对向家坝库区中的Cu、Zn、Pb、Cr、Cd、Ni、共6种重金属进行了4步提取,对重金属各形态进行分析,发现重金属Cd存在着一定的污染风险。Heavy metal pollution has long been one of the most difficult problems in environmental management.For river sediments,heavy metal pollution has the characteristics of accumulation,long hazard cycle and difficult to treat,so the heavy metal in sediments has become the focus of researchers at home and abroad.Xiangjiaba Reservoir is the last rung of Jinsha River cascading reservoir group,which has important influence on the accumulation of heavy metals and their temporal and spatial migration in the lower Yangtze River.In this paper,Cu,Zn,Pb,Cr,Cd,Ni and 6 heavy metals were extracted from Xiangjiaba reservoir by BCR continuous extraction method.

关 键 词：向家坝库区 重金属 沉积物 形态 

分 类 号：O661.1[理学—分析化学]