Application of hydrochemistry and strontium isotope for understanding the hydrochemical characteristics and genesis of strontium-rich groundwater in karst area,Gongcheng County,Southwest China  

作　　者：Mi Tang Jun Lv Shi Yu Yan Liu Shao-hong You Ping-ping Jiang 

机构地区：[1]College of Environmental Science and Engineering,Guilin University of Technology,Guilin 541004,Guangxi,China [2]Guangxi Zhuang Autonomous Region Hydrographic Centre,Nanning 530023,China [3]Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area,Ministry of Natural Resources,Nanning 530028,China [4]Key Laboratory of Karst Dynamics,Ministry of Natural Resources&Guangxi Zhuang Autonomous Region,Institute of Karst Geology,Chinese Academy of Geological Sciences,Guilin 541004,Guangxi,China [5]International Research Centre on Karst under the Auspices of UNESCO/National Center for International Research on Karst Dynamic System and Global Change,Guilin 541004,Guangxi,China [6]Guilin Research Institute of Environmental Protection Sciences,Guilin 541004,Guangxi,China [7]Guangxi Key Laboratory of Green Preparation and Application of Inorganic Materiais,Laibin 546199,Guangxi,China [8]College of Earth Sciences,Guilin University of Technology,Guilin 541004,Guangxi,Chin

出　　处：《Journal of Groundwater Science and Engineering》2024年第3期264-280,共17页地下水科学与工程（英文版）

基　　金：supported by the Guangxi Natural Science Foundation(2020GXNSFAA297025);the Guangxi Natural Science Foundation(GuikeAB22080046);the Guangxi Natural Science Foundation(GuikeAB21196050);the National Natural Science Foundation of China(42177075);the Natural Resources Science and Technology Strategic Research Project(2023-ZL-23);the Survey and China Geological Survey(DD20221808 and DD20230547).

摘　　要：Understanding the hydrochemical characteristics and genesis mechanisms of strontium-rich groundwater is pivotal for supporting the exploitation and utilization of natural strontium-rich groundwater.In this research,27 groundwater samples were collected.By analyzing major ion chemistry and strontium isotope data,and considering the hydrogeological context,various analytical approaches,including multivariate statistics,ion ratios,and isotopes,were used to reveal the characteristics and genesis mechanisms of strontium-rich groundwater in the study area.The findings indicate that the predominant hydrochemical type of groundwater is HCO_(3)-Ca,with Ca^(2+)and HCO_(3)^(-)as the primary cations and anions.The hydrochemistry of the strontium-rich groundwater is predominantly influenced by rock weathering processes.A combination of factors,including ion exchange,and anthropogenic activities,shapes the compositional characteristics of the groundwater in the region.The dissolution of calcite due to weathering emerges as the principal source of strontium in the groundwater.While ion exchange processes are not conducive to strontium enrichment in groundwater,their effect is relatively limited.The impact of human activities on the groundwater is minor.

关 键 词：Hydrochemistry analysis STRONTIUM ^(87)Sr/^(86)Sr GROUNDWATER Karst 

分 类 号：P641[天文地球—地质矿产勘探]