Distribution of groundwater arsenic and hydraulic gradient along the;shallow groundwater flow-path in Hetao Plain, Northern China

doi:10.1016/j.gexplo.2012.12.004

CORC > 中国地质调查局 > 中国地质调查局 > 中国地质科学院水文地质环境地质研究所

	Distribution of groundwater arsenic and hydraulic gradient along the;shallow groundwater flow-path in Hetao Plain, Northern China
	Zhang, Yilong 2; Cao, Wengeng ; Wang, Wenzhong ; Dong, Qiuyao
刊名	JOURNAL OF GEOCHEMICAL EXPLORATION
	2013
卷号	135;SI SI 页码:31-39
关键词	Arsenic Hydraulic gradient Groundwater Flow path Hetao Plain Transect
ISSN号	0375-6742;EI 1879-1689
DOI	10.1016/j.gexplo.2012.12.004
英文摘要	This paper investigates how spatial distributions of groundwater arsenic (As) concentration and speciation are related to and are dependent on regional hydraulic gradients in a shallow aquifer containing elevated groundwater As in the Hetao Plain of Northern China. Groundwater samples (n = 165) were collected along three representative transects in the western, central and eastern parts of the Hetao Plain, spanning a wide range of total As concentration (036-916.7 mu g/l), arsenite concentration (0.2-719.4 mu g/l) and hydraulic gradients (0.11-23.31 parts per thousand.). The hydrodynamic conditions of the aquifer generally fall into the following four categories from the north to the south: Piedmont and discharge areas with high hydraulic gradient, runoff areas with weak or strong hydraulic gradient, and areas influenced by recharge from the Yellow River. Along all three transects, high groundwater As usually corresponds to low hydraulic gradients except for the discharge areas. In the runoff area in central Hetao Plain and the recharge area in southern Hetao Plain, the concentration of arsenic is more than 10 mu g/l when the hydraulic gradient is less than 0.8 parts per thousand. An empirical relationship between groundwater As concentration and groundwater hydraulic gradient can be established for the runoff area. The systematic changes in As concentrations and speciation along the groundwater flow path in the shallow groundwater support the notion that low hydraulic gradient of the groundwater is important in promoting As enrichment in groundwater. (C) 2012 Elsevier B.V. All rights reserved.
学科主题	水文地质学
WOS关键词	INNER-MONGOLIA ; TRACE-ELEMENTS ; BASIN ; WATER ; GEOCHEMISTRY ; AQUIFERS ; CONTAMINATION ; MOBILIZATION ; VIETNAM
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000329540000003
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40005]
专题	中国地质科学院水文地质环境地质研究所
作者单位	1.Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Zhengding 050803, Hebei, Peoples R China. 2.中国地质科学院水文地质环境地质研究所
推荐引用方式 GB/T 7714	Zhang, Yilong,Cao, Wengeng,Wang, Wenzhong,et al. Distribution of groundwater arsenic and hydraulic gradient along the;shallow groundwater flow-path in Hetao Plain, Northern China[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2013,135;SI SI:31-39.
APA	Zhang, Yilong,Cao, Wengeng,Wang, Wenzhong,&Dong, Qiuyao.(2013).Distribution of groundwater arsenic and hydraulic gradient along the;shallow groundwater flow-path in Hetao Plain, Northern China.JOURNAL OF GEOCHEMICAL EXPLORATION,135;SI SI,31-39.
MLA	Zhang, Yilong,et al."Distribution of groundwater arsenic and hydraulic gradient along the;shallow groundwater flow-path in Hetao Plain, Northern China".JOURNAL OF GEOCHEMICAL EXPLORATION 135;SI SI(2013):31-39.