Study of Technetium Sorption Behavior on Nanodiamonds Using 99,99mTc Isotopes

Abstract

Nanodiamonds (NDs) were investigated as potential carriers of Tc-99m, which is widely used for the diagnosis of diseases in nuclear medicine. The sorption of Tc-99(VII), Tc-99m(VII), and Tc-99m(IV) by commercial NDs and their reduced, aminated, and oxidized forms was studied. The physicochemical parameters of the Langmuir and Freundlich isotherms for the sorption of Tc-99(VII) by the used ND samples were determined. The Sn(II): Tc(VII) ratio for the quantitative reduction of Tc to the oxidation state IV was optimized. It was shown that the initial (commercial) and oxidized NDs are promising carriers of Tc-99m(IV) for nuclear medicine.