[1] UNCPBA, CONICET, CIC, Inst Hidrol Llanuras Dr Eduardo J Usunoff, Republ Italia 780,47 B7300, Azul, Buenos Aires, Argentina
[2] UB, Grp MAiMA SGR Mineral Aplicada Geoquim & Geomicro, Dept Mineral Petrol & Geol Aplicada, Fac Ciencies Terra, C Marti i Franques S-N, Barcelona 08028, Spain
[3] Univ Copenhagen, Dept Geosci & Nat Resource Management, Copenhagen, Denmark
[4] Generalitat Catalunya, Barcelona, Spain
[5] CSIC, IDAEA, Inst Environm Assessment & Water Res, Dept Geosci, C Jordi Girona 18, E-08028 Barcelona, Spain