Enzymatic hydroxyapatite as a carrier for yttrium-90 and copper and ruthenium radionuclides

The use of hydroxyapatite obtained by enzymatic synthesis (HAP_E) as a carrier of radionuclides (yttrium-90, copper(II) as a prototype of ⁶⁴Cu and ⁶⁷Cu and ruthenium-103 as a prototype of ⁹⁷Ru) is considered. The processes of sorption and desorption of ions in different solutions are compared. The sorption of copper and yttrium on HAP_E is almost irreversible, in contrast to the sorption of ruthenium, for which the reverse process depends on the medium.