Geochemical Evolution and Mineral–Water Interaction Pathways in Qatar's Groundwater – Integrating Speciation, Saturation and Inverse Modelling Approaches

The dataset consists of groundwater quality records from multiple sampling campaigns conducted across Qatar between 1998 and 2021. It contains 291 individual samples, each with major physicochemical parameters, pH, EC, TDS, and major ions, Ca2+, Mg2+, Na+, K+, HCO₃⁻, SO₄²⁻, Cl⁻, expressed in mg/L. It also includes the results (mineral saturation indices and speciation percentages) of the geochemical model runs conducted.该数据集涵盖了1998年至2021年间在卡塔尔境内开展的多次采样活动所获取的地下水水质记录。数据集共包含291份独立样本，每份样本均记录了核心理化参数：pH值、电导率（EC）、总溶解固体（TDS）以及主要离子Ca²+、Mg²+、Na+、K+、HCO₃⁻、SO₄²⁻、Cl⁻的含量，单位为mg/L。此外，数据集还包含了所开展的地球化学模型运行结果，即矿物饱和指数与化学形态占比。