%A Chen Meng, Wu Yong, Gao Dongdong, Chang Ming %T Shallow Groundwater Hydrogeochemical Evolution Process and Controlling Factors in Plain Zone of Guanghan City %0 Journal Article %D 2016 %J Journal of Jilin University(Earth Science Edition) %R 10.13278/j.cnki.jjuese.201603205 %P 831-843 %V 46 %N 3 %U {http://xuebao.jlu.edu.cn/dxb/CN/abstract/article_10521.shtml} %8 2016-05-26 %X

Four methods, including mineral weathering system analysis, correlation analysis, principal component analysis and inverse hydrogeochemical simulation by PhreeQC are used to analyse the chemical composition, identify hydrogeochemical evolution processes and controlling factors, then complete analyzing quality and spatial temporal distribution of shallow groundwater in the plain of Guanghan City, which provides basic data for developing and utilizing groundwater resources exsisting in urban and rural planning process. The analysis showes that Gibbs plots indicate that the groundwater hydrochemical characteristics are dominated by rock weathering, the weathering processes produce ions and then secondary minerals undergo hydrolysis; aluminosilicate minerals of water samples tend to dissolve gradually in the mineral weathering system stability diagram; carbonate minerals are saturated. PhreeQC inverse hydrogeochemical simulation results show what mainly happen in the water flow path simulation are the dissolution of calcium montmorillonite and K-feldspar, the precipitation of kaolinite, quartz and albite, and the cation exchange adsorption between Ca-Na2; The analysis of ion correlation and principal component analysis verifies that leaching, evaporation and concentrating, and cation exchange adsorption are the main cause of hydrochemical process and mineral composition in the shallow groundwater. The groundwater quality in the study area generally will not cause adverse effects on human health.