Application of the Radioactive Multitracer Technique to a Study of Adsorption of Metal Ions on α-Fe2O3

The radioactive multitracer technique was applied to a study of adsorption of metal ions on α-Fe2O3 from aqueous solutions. The pH dependence of the adsorption of the elements, Sc, Ga, As(V), Se(IV), Rb, Sr, Y, Zr, Nb, and Mo(VI), was simultaneously determined using a multitracer solution separated from an Ag target irradiated by a 135 MeV/nucleon 12C beam available from the RIKEN Ring Cyclotron. Characteristic adsorption behavior of each element was determined under strictly identical experimental conditions.