Multivariate statistical study of heavy metal enrichment in sediments of the Pearl River Estuary
文献类型：期刊论文
| 作者 | Liu, WX; Li, XD; Shen, ZG; Wang, DC; Wai, OWH; Li, YS |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2003 |
| 卷号 | 121期号:3页码:377-388 |
| 关键词 | estuarine sediments heavy metals normalization enrichment the Pearl River Estuary |
| 英文摘要 | The concentrations and chemical partitioning of heavy metals in the sediment cores of the Pearl River Estuary were studied. Based on Pearson correlation coefficients and principal component analysis results, Al was selected as the concentration normalizer for Pb, while Fe was used as the normalizing element for Co, Cu, Ni and Zn. In each profile, sections with metal concentrations exceeding the upper 95% prediction interval of the linear regression model were regarded as metal enrichment layers. The heavy metal accumulation mainly occurred at sites in the western shallow water areas and east channel, which reflected the hydraulic conditions and influence from riparian anthropogenic activities. Heavy metals in the enrichment sections were evaluated by a sequential extraction method for possible chemical forms in sediments. Since the residual, Fe/Mn oxides and organic/sulfide fractions were dominant geochemical phases in the enriched sections, the bioavailability of heavy metals in sediments was generally low. The Pb-206/Pb-207 ratios in the metal-enriched sediment sections also revealed the influence of anthropogenic sources. The spatial distribution of cumulative heavy metals in the sediments suggested that the Zn and Cu mainly originated from point sources, while the Pb probably came from non-point sources in the estuary. (C) 2002 Elsevier Science Ltd. All rights reserved. |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| WOS记录号 | WOS:000180501200008 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23765]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu, WX,Li, XD,Shen, ZG,et al. Multivariate statistical study of heavy metal enrichment in sediments of the Pearl River Estuary[J]. ENVIRONMENTAL POLLUTION,2003,121(3):377-388. |
| APA | Liu, WX,Li, XD,Shen, ZG,Wang, DC,Wai, OWH,&Li, YS.(2003).Multivariate statistical study of heavy metal enrichment in sediments of the Pearl River Estuary.ENVIRONMENTAL POLLUTION,121(3),377-388. |
| MLA | Liu, WX,et al."Multivariate statistical study of heavy metal enrichment in sediments of the Pearl River Estuary".ENVIRONMENTAL POLLUTION 121.3(2003):377-388. |
入库方式： OAI收割
来源：生态环境研究中心
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