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Abstract：
The study focuses on the chemistry of groundwater and if it is suitable for drinking and for use in agriculture using water quality indices, GIS mapping, and multivariate analyses in Sharsa Upazila, Jashore district, Bangladesh. In this study, the concentration of NH4+, K+, Ca2+, EC, Turbidity overstep BDWS drinking standards in 69 %, 14 %, 100 %, 40 % (WHO), 73 % of samples respectively. The value of Water Quality Indices (WQI) results inferred that the maximum specimen was held good quality for drinking uses, and the values distributed central eastern part to the south-eastern part were good quality water in the selected studied area. The study area\'s PH, EC, SAR, Na (%), TH, and NO3- values were mapped using GIS tools to show their spatial distribution. The cluster and correlation matrix analyses are used to validate for Principle Component Analysis (PCA). The five PCA results exhibited that the presence of EC, turbidity, K+, SO42- and NO3- was significant and was caused by both geogenic (rock weathering and cation exchange) and anthropogenic (agrochemicals, animal feedback) factor. According to the hydro-geochemical data, the maximum number of samples is of the Ca-Mg-HCO3-Cl type and is dominated by rocks. The irrigation water indices like MH, KR, SAR, and %Na indicate show high-quality groundwater for irrigation purposes. Most of the samples were satisfactory and compiled with WHO and Bangladeshi criteria for standard drinking water guideline values.
摘要：
该研究的重点是地下水的化学性质，以及是否适合饮用和使用水质指数用于农业，GIS制图,以及SharsaUpazila的多变量分析，Jashore区,孟加拉国。在这项研究中,NH4+的浓度，K+,Ca2+,EC,浊度超过BDWS饮用标准69%，14%,100%,40%(世卫组织)73%的样品分别。水质指数（WQI）结果的值推断，最大的标本是保持良好的质量用于饮用，在选定的研究区域中，分布在中东部到东南部的值是优质水。研究区域的PH,EC,SAR,Na(%),TH,和NO3-值使用GIS工具绘制，以显示其空间分布。聚类和相关矩阵分析用于验证主成分分析（PCA）。五个PCA结果表明，EC的存在，浊度,K+,SO42-和NO3-是重要的，并且是由地质（岩石风化和阳离子交换）和人为（农用化学品，动物反馈)因子。根据水文地球化学数据，样品的最大数量为Ca-Mg-HCO3-Cl型，以岩石为主。像MH这样的灌溉水指数，KR,SAR,和%Na表示显示用于灌溉目的的优质地下水。大多数样本都令人满意，并符合世卫组织和孟加拉国标准饮用水指导值的标准。
