koyra深含水层的地下水化学：孟加拉国Khulna

Koyra（Khulna区）是孟加拉国沿海Upazila，非常易于盐度入侵。Upazila的表面和浅管井水是天然盐水。普及地区在临时地区的地下管井水的质量几乎没有呈现出koyra的不同工会。达克森·贝卡西联盟威尔德酸盐般的盐水。因此，如果地下水适合饮用和灌溉，则确定Dakshin Bedkashi Union的地下水化学。在2016年12月，从深含水层（550至700英尺深度）收集空间分散的30个水样，并分析了物理化学性质。将结果与世卫组织，USEPA和BBS饮用水质量标准进行比较，粮农组织标准进行灌溉用途。pH从6.73变化到8.33，表明水样在WHO饮用水质量标准中。TDS显示出长距离变化（230.5至2052.0ppm），平均为841.23ppm，其中33％的水源超过BBS标准值。盐度平均值为0.65（±0.43）PPT，EC为1,400.9（±904.18）μscm-1。 The loads of key ions were ranked as Na+> Ca2+> Mg2+> K+ and HCO3-> Cl-> SO42-> NO3-> PO4-. The Piper diagram demonstrated that the existing hydro-chemical facies of groundwater were Na+-Cl--HCO3- and Na+-Ca2+-HCO3- type. The Gibbs diagram illustrated that the chemical arrangement of groundwater is mainly misrepresented by rock weathering. Silicate weathering was the profuse process along study area. The Wilcox diagram proved that the greater water sources were allowable to suspicious for irrigation. The core component analysis ensured that rock suspension and sea water intrusion was the primary source of ions in groundwater. The controlling factors of groundwater chemistry were typically related to geologic factors, while the anthropogenic factors have not any momentous effects.