1. Facultad de Ciencias Ambientales and Centro EULA, Universidad de Concepción, Concepción 4030000, Chile
2. Water Research Center for Agriculture and Mining (CRHIAM), Victoria 1295, Concepción 4030000, Chile
3. Department of Chemical Engineering and Laboratory of Surface Analysis (ASIF), Universidad de Concepción, P.O. Box 160-C, Correo 3, Concepción 4030000, Chile
4. Water Resources Department, Universidad de Concepción, Vicente Méndez 595, Chillán 3780000, Chile