Hydrochemical analysis of groundwater in Langueyú creek basin, Tandil, Argentina

BARRANQUERO, ROSARIO SOLEDAD; VARNI, MARCELO; RUIZ DE GALARRETA, ALEJANDRO

Barcelona

Jornada; 13as Jornadas de Análisis Instrumental; 2011

Sociedad Española de Química Analítica

This work is aimed to describe and analyze the chemistry of groundwater in a study area located in Langueyú creek basin, in order to contribute with the construction of the conceptual model of underground hydric system. To achieve the objective, the phreatic levels were measured and groundwater samples were taken with a quaterly frecuency in a monitoring network of thirty wells. Physicochemical parameters, conductivity, pH, major ions and nitrate, were determined. The results showed that groundwater of the study area are young, because of its low salinity and the predominance of bicarbonate ion. It is conclude that the hydrochemical variables, as well as hydrodynamic ones, have a significant dependence of hills, foothills and plains zones, defined through geomorphological characteristics. It is evident that the study of hidrochemistry can be used as a complementary tool to the hydrodynamic analysis, enabling even display behaviors that are not so evident with the latter.