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Geoscience ›› 2018, Vol. 32 ›› Issue (03): 554-564.DOI: 10.19657/j.geoscience.1000-8527.2018.03.13

• Hydrogeology and Environmental Geology • Previous Articles     Next Articles

Hydrochemical Characteristics and Formation Mechanism of Strontium-rich Groundwater in Xintian County,Hunan Province

SU Chuntian1,2(), NIE Fayun3, ZOU Shengzhang2(), ZHAO Guangshuai2, LUO Fei2, HUANG Qibo2, BA Junjie2, LI Xiaopan2, LIANG Jiapeng2, YANG Yang2   

  1. 1. School of Environmental Studies,China University of Geosciences,Wuhan, Hubei 430074,China
    2. Key Laboratory of Karst Dynamics,Ministry of Land and Resources/Guangxi Zhuang Autonomous Region,Institute of Karst Geology,Chinese Academy of Geological Sciences, Guilin, Guangxi 541004,China
    3. School of Water Resources and Environment,China University of Geosciences,Beijing 100083,China
  • Received:2017-08-07 Revised:2017-12-23 Online:2018-06-10 Published:2023-09-22
  • Contact: ZOU Shengzhang

Abstract:

To provide a theoretical basis for the sustainable utilization and development of strontium-rich groundwater, we described the chemical characteristics and discussed the possible origin of the strontium-rich groundwater in Xintian, Hunan.The hydrochemical types, chemical compositions, and correlations between components and ionic ratio of strontium-rich groundwater samples from 21 descending springs and 30 wells are presented.The results show that the chemical types of descending springs are all HCO3-Ca type, whilst those of wells are mainly HCO3-Ca and HCO3-Ca·Mg types.The correlation analysis shows that the SO42- and Ca2+ and Mg2+ in the descending springs and the wells are colsely correlated,and HCO3- vs.Ca2+, SO42- vs.NO3- correlations are different in the descending springs and the pumped wells.Strontium is strongly correlated with Ca2+,Mg2+ and HCO3- in descending springs and wells.Gibbs control chart shows that decrease of water spring and well chemical composition is mainly affected by water rock interaction, and the Ca2+/Mg2+,HCO3-/(SO42-+Cl-),Na+/Cl-,Cl-/Ca2+ ratios are different in descending springs and pumped wells. All the results show that the formation of Sr-rich groundwater is significantly affected by the carbonate composition. The difference of the reservoir conditions may have led to the varying hydrochemical characteristics, correlation and the ratio of ionic coefficient of strontium-rich groundwater in descending springs and pumped wells.

Key words: hydrochemical characteristic, ion scale coefficient method, strontium rich groundwater, Xintian county,Hunan, Gibbs diagram

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