NANOPARTICULAS DE MAGNETITA AS (0) 3 AS (III) 3 AS (V) 3 ASH3 3 CONTAMINACION AMBIENTAL 3 ENVIRONMENTAL CONTAMINATION 3 ESPECTROSCOPIA MOSSBAUER 3 FOTOCATALISIS HETEROGENEA 3 HETEROGENEOUS PHOTOCATALYSIS 3 MOSSBAUER SPECTROSCOPY 3 NANOPARTICLES OF MAGNETITE 3 NANOPARTICULAS DE FE CEROVALENTE 3 PHOTOCHEMICAL PROCESSES 3 PROCESOS FOTOQUIMICOS 3 TIO2 3 XANES 3 ZEROVALENT IRON NANOPARTICLES 3 BIOMARKERS PARAMETERS 2 BIOMPHALARIA GLABRATA 2 EFECTOS TOXICOS 2 ESTRES OXIDATIVO 2 GOETHITE NANOPARTICLES 2 LUMBRICULUS VARIEGATUS 2 MAGNETITE NANOPARTICLES 2 NANOPARTICULAS DE GOETHITA 2 OXIDATIVE STRESS 2 PARAMETROS BIOMARCADORES 2 TOXIC EFFECTS 2