| Fractionation of heavy metals in sediments from Dianchi Lake, China | |
| Li Ren-Ying; Yang Hao; Zhou Zhi-Gao; Lu Jun-Jie; Shao Xiao-Hua; Jin Feng | |
| 刊名 | PEDOSPHERE
 |
| 2007-04-01 | |
| 卷号 | 17期号:2页码:265-272 |
| 关键词 | Dianchi Lake heavy metal fractions lake sediment organic matter reducible Fe |
| ISSN号 | 1002-0160 |
| 通讯作者 | Li Ren-Ying(ryli75@163.com) |
| 英文摘要 | Fractionation of heavy metals in sediments can help in understanding potential hazards of heavy metals. The present study analyzed total concentrations and fractions of selected heavy metals (Cd, Cr, Cu, Pb, and Zn) in surface sediments from Dianchi Lake, Yunnan Province, China, as well as factors that may affect distributions of the various heavy metal fractions. Total concentrations of the heavy metals decreased in the order Zn > Cu > Pb > Cr > Cd. These heavy metals except Cr, were much higher than their background levels, indicating that Dianchi Lake was polluted by Cd, Zn, Pb, and Cu. Cadmium occurred mainly as the non-residual fraction (sum of the HOAc-soluble, reducible, and oxidizable fractions) (97.6%), and Zn (55.7%) was also predominantly found in the non-residual fraction. In contrast, most of the Cr (88.5%), Pb (81.8%), and Cu (59.2%) occurred in the residual fraction. Correlation analysis showed that total heavy metal concentrations, organic matter and reducible Fe were the main factors affecting the distributions of the various heavy metal fractions. In the Waihai section of Dianchi Lake (comprising 97% of the lake area), the concentrations of Cd, Zn, Pb, and Cu in the non-residual fraction were significantly lower (P < 0.01 or 0.05) than those of the Caohai section (3% of the lake area). This indicated that potential heavy metal hazards in the Caohai section were greater than the Waihai section. |
| 收录类别 | SCI |
| WOS关键词 | SEQUENTIAL EXTRACTION ; CONTAMINATED SOILS ; SEWAGE-SLUDGE ; SPECIATION ; CADMIUM ; WATER ; RIVER |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| 出版者 | SCIENCE CHINA PRESS |
| WOS记录号 | WOS:000245447300015 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2558618 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Li Ren-Ying |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Nanjing Normal Univ, Coll Geog Sci, Nanjing 210097, Peoples R China 3.Nanjing Univ Informat Sci & Technol, Dept Appl Meteorol, Nanjing 210044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Ren-Ying,Yang Hao,Zhou Zhi-Gao,et al. Fractionation of heavy metals in sediments from Dianchi Lake, China[J]. PEDOSPHERE,2007,17(2):265-272. |
| APA | Li Ren-Ying,Yang Hao,Zhou Zhi-Gao,Lu Jun-Jie,Shao Xiao-Hua,&Jin Feng.(2007).Fractionation of heavy metals in sediments from Dianchi Lake, China.PEDOSPHERE,17(2),265-272. |
| MLA | Li Ren-Ying,et al."Fractionation of heavy metals in sediments from Dianchi Lake, China".PEDOSPHERE 17.2(2007):265-272. |
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