[1] Univ Rey Juan Carlos, Grp Invest & Docencia Toxicol Ambiental & Evaluac, Avda Tulipan Sn, Madrid, Spain
[2] Rey Juan Carlos Univ, Fac Hlth Sci, Dept Prevent Med Publ Hlth Immunol & Med Microbio, Avda Atenas S-N, Madrid 28922, Spain
[3] Inst Geol & Minero Espana IGME, C Rios Rosas 23, Madrid 28003, Spain
[4] CSIC, Inst Environm Assessment & Water Res IDAEA, Dept Environm Chem, Water Environm & Food Chem Unit ENFO CHEM, C Jordi Girona 18-26, Barcelona 08034, Spain
[5] Univ Autonoma Madrid, Dept Geol & Geoquim, Fac Ciencias, Madrid 28049, Spain
[6] Inst Nacl Agua, Empalme J Newbery Km 1 620, Buenos Aires, DF, Argentina