spectroscopie (1) empoisonnement (1) oxydation (1) arsenic (1) modèle (1) minéral (1) matériau (1) fer (1) champ (1) effet (1) comparaison (1) ingéniérie (1) adsorption (1) Comparison (1) Oxidation (1) Forms (1) Minerals (1) Origin (1) Tetrahedra (1) Surfaces (1) Spectrum analysis (1) Ragpickers (1) Proportion (1) Process (Law) (1) Powders (1) Poisoning (1) Oxidation (1) Nucleation (1) Iron (1) Goethite (1)