| 南京玄武湖底泥重金属形态与环境意义 |
| |
| 引用本文： | 张立,袁旭音,邓旭. 南京玄武湖底泥重金属形态与环境意义[J]. 湖泊科学, 2007, 19(1): 63-69 |
| |
| 作者姓名： | 张立 袁旭音 邓旭 |
| |
| 作者单位： | 河海大学水文水资源与水利工程科学国家重点实验室,南京,210098;河海大学环境学院,南京,210098;河海大学环境学院,南京,210098 |
| |
| 基金项目： | 河海大学重点实验室开放基金 , 河海大学校科研和教改项目 |
| |
| 摘 要： | 通过对玄武湖12个底泥样品采用连续提取的方法,分别获得湖中6种金属的总量和形态分布数据,并用因子分析的方法对金属总量进行统计分析.金属总量结果表明,部分样点的Ni和大部分样点的Cr、Pb、Zn超过背景值,显示有轻度污染,这与玄武湖周围的地理环境和人类活动对底泥重金属的影响有关.对金属形态分析的结果表明,在所测金属中残渣态是主要的存在形式,其次比例较高的是有机物和硫化物结合态,而Pb、Zn有潜在的生物危害性.
|
| 关 键 词： | 底泥 重金属 生物有效性 玄武湖 |
| 收稿时间： | 2006-01-04 |
| 修稿时间： | 2006-03-06 |
Speciation of heavy metals in sediments from Lake Xuanwu and their environmental significance |
| |
| ZHANG Li,YUAN Xuyin and DENG Xu. Speciation of heavy metals in sediments from Lake Xuanwu and their environmental significance[J]. Journal of Lake Science, 2007, 19(1): 63-69 |
| |
| Authors: | ZHANG Li YUAN Xuyin DENG Xu |
| |
| Affiliation: | State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, P.R.China;Department of Environmental Sciences and Engineering, Hohai University, Nanjing 210098, P.R.China,State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, P.R.China;Department of Environmental Sciences and Engineering, Hohai University, Nanjing 210098, P.R.China and Department of Environmental Sciences and Engineering, Hohai University, Nanjing 210098, P.R.China |
| |
| Abstract: | Six elements(Ni,Cu,Cr,Pb,Mn,Zn)in twelve sediment samples from Lake Xuanwu were studied by BCR sequential extraction method to obtain their distribution features in this region and the data were analyzed with Factorial Analysis method.The results showed that the metal concentrations of Ni,Pb,Zn in some sediments of Lake Xuanwu exceeded the background levels,revealing slight pollution,which were affected by the geological setting and the anthropogenic input.Metals detected was mainly associated with the residual fraction in the lake, and the oxidable fraction was followed.The acid soluble fraction of Pb,Zn had higher percentages in total contents than other four metals,so their potential risk to aquatic organisms must be considered. |
| |
| Keywords: | Sediment heavy metals bioavailability Lake Xuanwu |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《湖泊科学》浏览原始摘要信息 |
|
点击此处可从《湖泊科学》下载全文 |
|
