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DOI:	10.1371/journal.pone.0156485
论文题名:	Source Evaluation and Trace Metal Contamination in Benthic Sediments from Equatorial Ecosystems Using Multivariate Statistical Techniques
作者:	Nsikak U. Benson; Francis E. Asuquo; Akan B. Williams; Joseph P. Essien; Cyril I. Ekong; Otobong Akpabio; Abaas A. Olajire
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2016
发表日期:	2016-6-3
卷:	11, 期:6
语种:	英语
英文关键词:	Sediment ; Ecosystems ; Principal component analysis ; Ecological risk ; Lead (element) ; Delta ecosystems ; Fractionation ; Water pollution
英文摘要:	Trace metals (Cd, Cr, Cu, Ni and Pb) concentrations in benthic sediments were analyzed through multi-step fractionation scheme to assess the levels and sources of contamination in estuarine, riverine and freshwater ecosystems in Niger Delta (Nigeria). The degree of contamination was assessed using the individual contamination factors (ICF) and global contamination factor (GCF). Multivariate statistical approaches including principal component analysis (PCA), cluster analysis and correlation test were employed to evaluate the interrelationships and associated sources of contamination. The spatial distribution of metal concentrations followed the pattern Pb>Cu>Cr>Cd>Ni. Ecological risk index by ICF showed significant potential mobility and bioavailability for Cu, Cu and Ni. The ICF contamination trend in the benthic sediments at all studied sites was Cu>Cr>Ni>Cd>Pb. The principal component and agglomerative clustering analyses indicate that trace metals contamination in the ecosystems was influenced by multiple pollution sources.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0156485&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/25353
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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File Name/ File Size	Content Type	Version	Access	License
journal.pone.0156485.PDF（7707KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Environmental Chemistry Unit, Department of Chemistry, Covenant University, Ota, Nigeria;Faculty of Marine Sciences, University of Calabar, Calabar, Nigeria;Environmental Chemistry Unit, Department of Chemistry, Covenant University, Ota, Nigeria;Department of Microbiology, University of Uyo, Uyo, Nigeria;Department of Chemical Science, Ritman University, Ikot Ekpene, Akwa Ibom State, Nigeria;Department of Chemistry, University of Uyo, Uyo, Akwa Ibom State, Nigeria;Industrial and Environmental Chemistry Unit, Department of Pure and Applied Chemistry, Ladoke Akintola, University of Technology, Ogbomoso, Nigeria

Recommended Citation:

Nsikak U. Benson,Francis E. Asuquo,Akan B. Williams,et al. Source Evaluation and Trace Metal Contamination in Benthic Sediments from Equatorial Ecosystems Using Multivariate Statistical Techniques[J]. PLOS ONE,2016-01-01,11(6)

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