Effect of the groundwater flow on trace element distribution in the river Danube deposition in the southern part of the Pannonian Basin (Hungary)
Reference:
Acta Mineralogica-Petrographica, Szeged 2001, Vol. 42, pp. 65-74
Szerző:
Erika Hrabovszki
Abstract:
Processes controlling the groundwater trace element composition were studied in the River Danube deposits. Cluster analysis based on trace element concentration was used to separate the different aquifer systems. Separation resulted two groups, which correspond to the midline and to the discharge area of the same water flow. Principal component and correlation analyis were used to determine the geochemical processes, which control the trace element distribution of the groundwater in these hydrological regions. Geochemical computer models helped to simulate the possible chemical processes. PHREEQE was used to model the chemical composition of the average midline water, and PHREEQM to simulate the processes taking place along the flow path of groundwater. In the midline area, the main processes controlling the trace element content are dissolution of calcite, dolomite, and Fe- Mn-oxides, aluminosilicate weathering, and As adsorption. In the discharge area, cation exchange, As desorption and organic matter decomposition play an important role in water chemistry.
Letöltés:
AMP_hrabovszkyVol42.pdf
acta2001, adsorption, cluster analysis, dissolution, hydrology, ion exchange, organic principal component, weathering
