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Laboratory and field study on development of ground water and seepage water properties



Laboratory and field study on development of ground water and seepage water properties



Meyniana 31: 25-58



Laboratory and field investigation of percolating water through soil columns (podsol, lessive and peat) down to groundwater table shows that the main factors which control the chemical characteristics of the percolates are precipitation, evaporation, infiltration rate, soil type, depth and dissolved organic substances. Evaporation and percolation velocity influences the Na+, SO42- anc Cl--concentrations. Low percolation velocity leads to longer percolation times and water logging in less permeable strata which results in lower Eh[oxidation-reduction potential]-values and higher CO2 concentrations due to low gas exchange with the atmosphere. Ca2+ and Mg2+ carbonate concentration depends on soil type and depth. Metamorphism and decomposition of organic substances involve NO3--reduction and K+, Mg2+, SO42-, CO2, Fe2+ and Fe3+ transport. The analytical data were evaluated with multivariate statistical methods.

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