Evaluation of hydro-chemistry in a phreatic aquifer in the Vindhyan Region, India, using entropy weighted approach and geochemical modelling

作     者：Ashutosh Mishra Aman Rai Prabuddh Kumar Mishra Suresh Chand Rai Ashutosh Mishra;Aman Rai;Prabuddh Kumar Mishra;Suresh Chand Rai

作者机构：Department of GeographyDelhi School of EconomicsUniversity of DelhiDelhi 110027India Department of GeographyShivaji CollegeUniversity of DelhiDelhi 110027India 

出 版 物：《Acta Geochimica》 (地球化学学报（英文）)

年 卷 期：2023年第42卷第4期

页      面：648-672页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：CGWB 

主　　题：Groundwater quality assessment EWQI Multivariate statistical analysis Geochemical modelling Hydrogeochemical processes Saturation index 

摘      要：Groundwater quality monitoring and geochemical characterization in the phreatic aquifer are critical for ensuring universal and equitable access to clean,reliable,and inexpensive drinking water for *** research was intended to investigate the hydrogeochemical attributes and mechanisms regulating the chemistry of groundwater as well as to assess spatial variation in groundwater quality in Satna district,*** accomplish this,the groundwater data comprising 13 physio-chemical parameters from thirty-eight phreatic aquifer locations were analysed for May 2020 by combining entropy-weighted water quality index(EWQI),multivariate statistics,geochemical modelling,and geographical information *** findings revealed that the groundwater is fresh and slightly *** was a significant concern as 57.89% of samples were beyond the permissible limit of the World Health *** dominance of ions were in the order of Ca^(2+) Na^(+) Mg^(2+) K^(+) and HCO_(3)^(-) SO_(4)^(2-) Cl^- NO_(3)^(-) F^(-).Higher concentration of these ions is mainly concentrated in the northeast and eastern *** correlation analysis and principal component analysis(PCA) demonstrated that both natural and human factors regulate groundwater chemistry in the *** analysis of Q-mode agglomerative hierarchical clustering highlighted three significant water ***-HCO_3 was the most prevalent hydro-chemical facies in all three *** modelling through various conventional plots indicated that groundwater chemistry in the research region is influenced by the dissolution of calcite/dolomite,reverse ion exchange,and by silicate and halite *** data of the study area disclosed that 73.69% of the samples were appropriate for *** to high salinity,Magnesium(Mg^(2+)),Nitrate(NO_(3)^(-)),and Bicarbonate(HCO_(3)^(-)) concentrations,the north-central and north-eastern regions are particularly *** findings of the study m