Usefulness of nano-zirconia for purification and concentration of 125I solution for medical applications

This paper described the utility of tetragonal nano-zirconia (t-ZrO2) to remove trace levels of 134Cs and 137Cs contaminants from 125I solution obtained from neutron irradiation of natural Xe target. A careful scrutiny of the adsorption parameters of t-ZrO2 was considered worthwhile investigating to arrive at the optimum conditions to perform the purification as well as concentration of 125I solution. The procedure proposed herein provides 125I of acceptable purity and radioactive concentration for clinical application. The compatibility of the separated product in the preparation of 125I brachytherapy sources was found to be satisfactory.