Distribution and ecological assessment of heavy metals in irrigation channel sediments in a typical rural area of south China

doi:10.1016/j.ecoleng.2016.01.054

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	Distribution and ecological assessment of heavy metals in irrigation channel sediments in a typical rural area of south China
	Gu, Chiming 1,2; Liu, Yi 1; Liu, Dongbi 3; Li, Zhiguo 1; Mohamed, Ibrahim 1,5; Zhang, Ronghua 4; Brooks, Margot 7; Chen, Fang 1,6
刊名	ECOLOGICAL ENGINEERING
	2016-05-01
卷号	90 页码:466-472
关键词	Contamination evaluation Heavy metal Pollution load index Potential ecological risk index
ISSN号	0925-8574
DOI	10.1016/j.ecoleng.2016.01.054
英文摘要	Elevated levels of heavy metals in sediments of irrigation channels can pose risks for crops and livestock, as well as for human health. In this study sediment samples were collected from the irrigation channel in a typical rural area of south China, and digested, in order to analyze their contents for the presence of heavy metals Cu, Zn, Pb, Cr, Cd, and Ni, as well as the non-metal As, to assess total concentrations and pollution levels. The pollution load index and potential ecological risk index of these elements were utilized to assess contamination levels and ecotoxicity. Our results showed that the concentrations of the 7 elements were in the order of Zn > Ni > Cr > Cu > As > Pb > Cd. With the exception of Cr and Pb, concentrations of elements were higher than their background in soil, especially for Cd (1.79 mg kg(-1)), As (99.61 mg kg(-1)) and Ni (142.62 mg kg(-1)), which were 18.49, 8.89 and 5.30 times their background concentrations, respectively. The whole sampled zone was characterized by medium pollution and had a very high potential ecological risk. The area of arable land presented a medium pollution risk, while areas near to the path or road showed high risk of pollution. The predominant contributors to elevated ecological risk for the whole zone were Cd and As. (C) 2016 Elsevier B.V. All rights reserved.
资助项目	Chinese Academy of Sciences[Y455434I02] ; National Key Technology RD Program[2012BAD15B01] ; National Natural Science Foundation of China[41501313] ; National Natural Science Foundation of China[31370529] ; National Natural Science Foundation of China[31201618] ; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[K318009902-1415] ; International Plant Nutrition Institute[IPNI-HB-33]
WOS研究方向	Environmental Sciences & Ecology ; Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000373376700059
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/80]
专题	中国科学院武汉植物园
通讯作者	Liu, Yi; Chen, Fang
作者单位	1.Chinese Acad Sci, Wuhan Bot Garden, Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Peoples R China 2.Univ Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Hubei Acad Agr Sci, Inst Plant Protect & Soil Fertilizer, Wuhan 430064, Peoples R China 4.Wuhan Vegetable Res Inst, Wuhan 430065, Peoples R China 5.Banha Univ, Fac Agr, Dept Soil Sci, Kalyoubia 13736, Banha, Egypt 6.China Program Int Plant Nutr Inst, Wuhan 430074, Peoples R China 7.Rhodes Univ, Dept Biochem & Microbiol, ZA-6140 Grahamstown, South Africa
推荐引用方式 GB/T 7714	Gu, Chiming,Liu, Yi,Liu, Dongbi,et al. Distribution and ecological assessment of heavy metals in irrigation channel sediments in a typical rural area of south China[J]. ECOLOGICAL ENGINEERING,2016,90:466-472.
APA	Gu, Chiming.,Liu, Yi.,Liu, Dongbi.,Li, Zhiguo.,Mohamed, Ibrahim.,...&Chen, Fang.(2016).Distribution and ecological assessment of heavy metals in irrigation channel sediments in a typical rural area of south China.ECOLOGICAL ENGINEERING,90,466-472.
MLA	Gu, Chiming,et al."Distribution and ecological assessment of heavy metals in irrigation channel sediments in a typical rural area of south China".ECOLOGICAL ENGINEERING 90(2016):466-472.