Understanding the extent of geochemical and hydrochemical processes in coastal karst aquifers through ion chemistry and multivariate statistical analysis (original) (raw)

Fresenius Environmental Bulletin

Abstract

The application of multivariate analyses on the hydrochemical data of the Trifilia karst aquifer delineates the existing hydrogeochemical processes and their contribution to the configuration of the hydrochemical character of groundwater. The application of factor analysis on two different sets of data, discriminated factors with a common geochemical interpretation, such as the salinization and geothermal factors. Furthermore, the application of factor analysis on the trace element concentrations spotted the influence of hydrocarbons on the chemical composition of groundwater, since it classified the redox sensitive metals in two different factors. The discriminant analysis led to the conclusion that the most important hydrogeochemical process is the groundwater salinization, since the electrical conductivity plays the major role in the classification of samples into five hydrochemical zones.

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