Tracing the sources of strontium in karst groundwater in Chongqing,;China: a combined hydrogeochemical approach and strontium isotope

CORC > 中国地质调查局 > 中国地质调查局 > 中国地质科学院岩溶地质研究所

	Tracing the sources of strontium in karst groundwater in Chongqing,;China: a combined hydrogeochemical approach and strontium isotope
	Pu, Junbing 4; Yuan, Daoxian ; Zhang, Cheng ; Zhao, Heping
刊名	ENVIRONMENTAL EARTH SCIENCES
	2012
卷号	67 期号:8 页码:2371-2381
关键词	Strontium isotope Hydrogeochemistry Karst groundwater Chongqing municipality
ISSN号	042UN
英文摘要	Groundwater quality in karst regions is largely controlled by natural processes and anthropogenic activities. Over the past 10 years, dissolved Sr and its radiogenic isotope, Sr-87/Sr-86, were widely used to trace the sources of solutes in groundwater. However, there is little research about hydrogeochemistry and Sr isotopic compositions of the karst groundwater in Chongqing karst area. In this paper, thirty-five representative karst groundwater samples were collected from different aquifers (limestone and dolomite) and various land use types. Hydrochemical types of karst groundwater in Chongqing were mainly of the Ca-HCO3 type or Ca(Mg)-HCO3 type. The dissolved Sr concentrations of the studied groundwater ranged from 0.57 to 15.06 mu mmol/L, and the Sr-87/Sr-86 varied from 0.70751 to 0.71627. The groundwater samples from different aquifers and land use types showed distinctive dissolved Sr concentrations and Sr-87/Sr-86. The very positive relationship between Ca/Sr and Mg/Sr in dolomite and limestone aquifers suggests that Ca, Mg and Sr element come mainly from the release of carbonate rock under the groundwater-rock-CO2 gas interaction. According to the Sr-87/Sr-86 ratio, the Sr element in karst groundwater in Chongqing was controlled by the weathering of limestone, dolomite and silicate rock (allogenic water in a non-karst area). The relationship Sr-87/Sr-86 versus Sr2+/[K+ + Na+] shows that the anthropogenic inputs also obviously contribute to the Sr contents. The research results show that the karst groundwater in Chongqing is facing serious crisis of water quality, and needs to be protected further.
学科主题	水文地质学
WOS关键词	SR ISOTOPES ; CARBONATE DISSOLUTION ; GUIZHOU PROVINCE ; SW CHINA ; WATER ; TRACERS ; FRANCE ; SR-87/SR-86 ; RATIOS ; BASIN
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
语种	英语
出版者	This work was supported by the Natural Science Foundation Project of;Chongqing, CSTC (No.CSTC2010BC7004), the National Natural Science;Foundation of China (No:41072192), the Special Fund for Public Benefit;Scientific Research of Ministry of Land and Resources of China;(201111022), the Guangxi Natural Science Foundation Project;(2012GXNSFBA053137) and IGCP/SIDA 598 Project. Thanks are given to;Yongjun Jiang, Qiong Xiao, Pengfei Gou, Jianjun Yin, Xingbo Zhang for;their help with the field sampling and in the laboratory. We also;sincerely thank the two anonymous reviewers, the editors and Dr. Thierry;Bussard for their valuable comments and language modifications, which;greatly improved the original manuscript.
WOS记录号	WOS:000311496900017
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39463]
专题	中国地质科学院岩溶地质研究所
作者单位	1.Chinese Acad Geol Sci, Inst Karst Geol, Karst Dynam Lab, Guilin 541004, Peoples R China. 2.UNESCO, Int Res Ctr Karst Auspices, Guilin 541004, Peoples R China. 3.Southwest Univ, Inst Karst Environm & Rock Desertificat Control, Sch Geog Sci, Chongqing 400715, Peoples R China. 4.中国地质调查局岩溶地质研究所
推荐引用方式 GB/T 7714	Pu, Junbing,Yuan, Daoxian,Zhang, Cheng,et al. Tracing the sources of strontium in karst groundwater in Chongqing,;China: a combined hydrogeochemical approach and strontium isotope[J]. ENVIRONMENTAL EARTH SCIENCES,2012,67(8):2371-2381.
APA	Pu, Junbing,Yuan, Daoxian,Zhang, Cheng,&Zhao, Heping.(2012).Tracing the sources of strontium in karst groundwater in Chongqing,;China: a combined hydrogeochemical approach and strontium isotope.ENVIRONMENTAL EARTH SCIENCES,67(8),2371-2381.
MLA	Pu, Junbing,et al."Tracing the sources of strontium in karst groundwater in Chongqing,;China: a combined hydrogeochemical approach and strontium isotope".ENVIRONMENTAL EARTH SCIENCES 67.8(2012):2371-2381.