Equilibrium of Groundwater with Carbonate Minerals of the Water-Bearing Rocks under Anthropogenic Impact (by the example of Kishinev, Moldova)

18th International Scientific Symposium in Honour of Academician M. A. Usov: Problems of Geology and Subsurface Development

Timoshenkova, A.N.^1 ; Pasechnik, E.Yu.^2 ; Tokarenko, O.G.^2

Institute of Geology and Seismology of ASM, MD-2028, Kishinev, Moldova^1

Tomsk Polytechnic University, Tomsk, Russia^2

关键词: Anthropogenic impacts;    Calcium content;    Calculation results;    Chemical water;    Mineral precipitation;    Moldova;    Nitrate ions;    Water-bearing rocks;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/21/1/012024/pdf
DOI  :  10.1088/1755-1315/21/1/012024

来源: IOP

【 摘 要 】

The paper presents calculation results of equilibrium of groundwater in Kishenev with a variety of secondary carbonate minerals. It is shown that the groundwater-rock system is in equilibrium with some minerals, such as calcite, magnesite, dolomite, siderite, but at the same time is not in equilibrium with strontianite. It indicates that secondary mineral precipitation is possible. Specific nitrate chemical water type, which is rarely observed in nature and characterized by the presence of anthropogenic impact in this territory, in some cases is of higher saturation as compared to calcite, dolomite and magnesite due to the fact that nitrate ion content increases with the increase of calcium content.