IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Current state, sources, and potential risk of heavy metals in sediments of Three Gorges Reservoir, China
Bing, Haijian1; Zhou, Jun1; Wu, Yanhong1; Wang, Xiaoxiao1,2; Sun, Hongyang1; Li, Rui1,2
Corresponding AuthorYanhong Wu
2016
Source PublicationENVIRONMENTAL POLLUTION
ISSN0269-7491
EISSN1873-6424
Volume214Pages:485-496
SubtypeArticle
AbstractHeavy 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.
KeywordHeavy Metals Source Identification Risk Assessment Sediment Three Gorges Reservoir
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.envpol.2016.04.062
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordLEAD-ISOTOPE RECORD ; ATMOSPHERIC LEAD ; SOUTHWEST CHINA ; RIVER SEDIMENTS ; ENVIRONMENT ; POLLUTION ; IDENTIFICATION ; APPORTIONMENT ; CONTAMINATION ; GEOCHEMISTRY
Language英语
Quartile2区
TOP
WOS SubjectEnvironmental Sciences
WOS IDWOS:000378448600055
Funding OrganizationScience and Technology Service Network Initiative of Chinese Academy of Sciences(KFJ-EW-STS-008) ; Chinese Academy of Sciences (CAS "Light of West China" Program)
Citation statistics
Cited Times:100[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/15137
Collection山地表生过程与生态调控重点实验室
Affiliation1.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
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
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.
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