IEECAS OpenIR  > 粉尘与环境研究室
Seasonal and spatial variations of heavy metalsin surface sediments collected from the BaoxiangRiver in the Dianchi Watershed, China
Xiao, DD(Xiao, Dongdong)1; Shi, ZT(Shi, Zhengtao)1; Wu, F(Wu, Feng)2; Su, B(Su,Bing)1; Feng, ZB(Feng, Zebo)1; Shi, Zhengtao
2018-02-13
Source PublicationHuman and Ecological Risk Assessment: An InternationalJournal
Volume24Issue:7Pages:1916-1929
AbstractTo explore potential ecological hazards due to heavy metals in the
Dianchi Lake Watershed, a three-stage European Community Bureau of
Reference (BCR) sequential extraction procedure was applied to examine
the spatial distributions and relative speciation ratios of Zn, Cu, Ni, Pb,
and Cr in Baoxiang River sediments during wet and dry seasons. The
metal species have similar spatial variations during different seasons. In
the upstream reaches of the Baoxiang River, heavy metals reside
primarily in the non-extractable residual fraction (72
90%). In the
midstream, the residual fraction (35
89%) remains dominant, but the
extractable fraction increases, featuring especially notable increases in
the reducible fraction (5
40%). Downstream, the Cu, Ni, Pb, and Cr
residual fractions remain high (46
80%) and the extractable fractions
increase rapidly; the Zn extractable fraction is quite high (65.5%).
Anthropogenic sources drive changes in heavy metal speciation.
Changes in the river environment, such as pH and oxidation-reduction
potential, also affect speciation. The reducible fraction of heavy metals
in Baoxiang River sediments is most sensitive to pH. Potential ecological
risk assessments for these
five elements indicate that risks from Zn and
Pb are mild to moderate in the middle and lower reaches of the river.

KeywordSediments Heavy Metal Speciation Ecological Risk Assessment Baoxiang River Dianchi Lake
Indexed BySCI
Project Number2014003
Language英语
Funding Organizationthe Water Conservancy Science and Technology project of Yunnan Provincial Water Resources Department ; the Water Conservancy Science and Technology project of Yunnan Provincial Water Resources Department
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5249
Collection粉尘与环境研究室
Corresponding AuthorShi, Zhengtao
Affiliation1.School of Tourism and Geographical Science, Yunnan Normal University, Kunming, Yunnan, China
2.KeyLaboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Instituteof Earth Environment, Chinese Academy of Sciences, Xian, China
Recommended Citation
GB/T 7714
Xiao, DD,Shi, ZT,Wu, F,et al. Seasonal and spatial variations of heavy metalsin surface sediments collected from the BaoxiangRiver in the Dianchi Watershed, China[J]. Human and Ecological Risk Assessment: An InternationalJournal,2018,24(7):1916-1929.
APA Xiao, DD,Shi, ZT,Wu, F,Su, B,Feng, ZB,&Shi, Zhengtao.(2018).Seasonal and spatial variations of heavy metalsin surface sediments collected from the BaoxiangRiver in the Dianchi Watershed, China.Human and Ecological Risk Assessment: An InternationalJournal,24(7),1916-1929.
MLA Xiao, DD,et al."Seasonal and spatial variations of heavy metalsin surface sediments collected from the BaoxiangRiver in the Dianchi Watershed, China".Human and Ecological Risk Assessment: An InternationalJournal 24.7(2018):1916-1929.
Files in This Item:
File Name/Size DocType Version Access License
12.Seasonal and spat(823KB)期刊论文出版稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Xiao, DD(Xiao, Dongdong)]'s Articles
[Shi, ZT(Shi, Zhengtao)]'s Articles
[Wu, F(Wu, Feng)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Xiao, DD(Xiao, Dongdong)]'s Articles
[Shi, ZT(Shi, Zhengtao)]'s Articles
[Wu, F(Wu, Feng)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Xiao, DD(Xiao, Dongdong)]'s Articles
[Shi, ZT(Shi, Zhengtao)]'s Articles
[Wu, F(Wu, Feng)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.