期刊论文

Pollution Characteristics and Ecological Risk Assessment of Heavy Metals in Surface Sediments in Changsha- Zhuzhou-Xiangtan Reach, Xiang Jiang River, China

中文

农业资源与环境学报

2095-6819

2015

1

60-65

10.13254/j.jare.2014.0230

2014024:湖南省研究生创新项目 2012001:湖南省重点学科建设项目

本校为第一机构

在湘江株洲-湘潭-长沙（长株潭）河段三地12处采集河流沉积柱芯12个，获得沉积物样本384个，采用地累积指数、潜在生态危害指数等评价方法，系统分析样本中Mn、Zn、Pb、Cu、Cr、Ni等6种重金属元素含量水平及分布变化特征，对湘江株洲-湘潭-长沙段重金属污染程度及生态风险进行评价。结果表明：湘江长株潭河流沉积物重金属变动趋势变动较大，Cu、Pb、Zn分布有明显地域规律，Cr、Ni、Mn分布无明显地域规律。地累积指数显示，除Ni和Cr外，长株潭三地都存在Pb、Cu、Zn、Mn污染，其中株洲霞湾段（ZX5-10）Pb和Zn达严重污染程度，Mn、Cu等达到中度或轻度污染程度；湘潭与长沙两地湘江沉积物Pb、Zn达到...

The concentration and distribution characteristics of six heavy metals（Mn, Zn, Pb, Cu, Cr, Ni）were analyzed in 384 surface sedi-ments samples from Xiang Jiang River（Zhuzhou-Xiangtan-Changsha Reach, hereinafter referred to as Chang-Zhu-Tan Reach）. Heavy metal pollution in the sediments from those areas were analyzed and evaluated by using geo-accumulation index method and potential ecological risk index method. The results indicated that the concentrations of heavy metals in the sediments from Chang-Zhu-Tan Reach which had dif-ferent variati...