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Multequina
versión On-line ISSN 1852-7329
Resumen
MAMANI, M.; HUESPE, J.; MORENO RAVELLI, R. y DEMATTE, R.. Contamination in an urban site of La Rioja city, Argentina: Analysis of risk. Multequina [online]. 2010, vol.19, n.1, pp.00-00. ISSN 1852-7329.
In La Rioja city there is a site for final disposal of liquid effluents discharged by industries, mainly textile factories, called Laguna Azul. It covers an area of 2.8 ha, with a maximum depth of 6 m, and a hydraulic load that contributes to infiltration of the liquid into the subsurface. For studying the physical and chemical parameters of the liquid, a mechanical device was designed that allows the automatic extraction of samples from different depths. Results showed that the pH value decreased from 9.81 on the ground surface to 9.24 at 4 m depth. Measured conductivity was 12 mS/cm, increasing to 13.4 mS/cm for the same depth. Presence of Cd and Cr, phenol and formaldehyde was detected as well.
Palabras clave : Artificial lake; Heavy metals; Wastewater.