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Current state, sources, and potential risk of heavy metals in sediments of Three Gorges Reservoir, China
文献类型：期刊论文
| 作者 | Bing, Haijian1 ; Zhou, Jun1; Wu, Yanhong1; Wang, Xiaoxiao1,2; Sun, Hongyang1; Li, Rui1,2
|
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2016-07-01 |
| 卷号 | 214页码:485-496 |
| 关键词 | Heavy metals Source identification Risk assessment Sediment Three Gorges Reservoir |
| ISSN号 | 0269-7491 |
| 通讯作者 | Yanhong Wu |
| 英文摘要 | Heavy metal (HM) contamination in sediments of Three Gorges Reservoir (TGR) is a particularly important issue for the safety of water quality due to the potential threats of metal toxicity to local and downstream human health. Surface sediments from riparian and submerged areas in the entire TGR mainstream were collected in 2014 to investigate the spatial distribution of HMs (Cd, Cu, Pb, and Zn), identify their possible source's, and assess their potential risk by multiple indices and metal fraction. Results showed that the concentrations of HMs in the sediments increased after the TGR operation, but were lower than those in other Chinese rivers of developed areas. The acid-soluble Cd accounted for more than 50% of total Cd in the sediments, whereas that of other HMs was very low. The Cd concentrations in the riparian sediments increased towards the dam; however, other metals in the riparian sediments and all HMs in the submerged sediments did not show any regular variation trend spatially. The stocks of HMs were significantly higher in the submerged sediments than in the riparian sediments. The high accumulation of HMs in the riparian sediments emerged between Fuling and Fengjie, and those in the submerged sediments existed in the near dam areas. Grain size and Fe/Mn oxides controlled the mobility and transfer of HMs in the sediments. Human activity in the catchment including industrial and agricultural production, shipping industry, mining, etc., increased inputs of HMs in the sediments, and altered their spatial distribution patterns. The sediments were moderately to highly contaminated by Cd, and slightly contaminated by other HMs. The results indicate the current priority of Cd contamination in the TGR, and will conduce to ecological protection in the TGR region. (C) 2016 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | LEAD-ISOTOPE RECORD ; ATMOSPHERIC LEAD ; SOUTHWEST CHINA ; RIVER SEDIMENTS ; ENVIRONMENT ; POLLUTION ; IDENTIFICATION ; APPORTIONMENT ; CONTAMINATION ; GEOCHEMISTRY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000378448600055 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/15137]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bing, Haijian,Zhou, Jun,Wu, Yanhong,et al. Current state, sources, and potential risk of heavy metals in sediments of Three Gorges Reservoir, China[J]. ENVIRONMENTAL POLLUTION,2016,214:485-496. |
| APA | Bing, Haijian,Zhou, Jun,Wu, Yanhong,Wang, Xiaoxiao,Sun, Hongyang,&Li, Rui.(2016).Current state, sources, and potential risk of heavy metals in sediments of Three Gorges Reservoir, China.ENVIRONMENTAL POLLUTION,214,485-496. |
| MLA | Bing, Haijian,et al."Current state, sources, and potential risk of heavy metals in sediments of Three Gorges Reservoir, China".ENVIRONMENTAL POLLUTION 214(2016):485-496. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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