The application of poorly crystalline silicotitanate in production of ²²⁵Ac.

ABSTRACT: Actinium-225 (²²⁵Ac) can be produced from a Thorium-229/Radium-225 (²²⁹Th/²²⁵Ra) generator, from high/low energy proton irradiated natural Thorium or Radium-226 target. Titanium based ion exchanger were evaluated for purification of ²²⁵Ac. Poorly crystalline silicotitanate (PCST) ion exchanger had high selectivity for Ba, Ag and Th. ²²⁵Ac was received with trace amounts of ²²⁷Ac, ²²⁷Th and ²²³Ra, and the solution was used to evaluate the retention of the isotopes on PCST ion exchanger. Over 90% of the ²²⁵Ac was recovered from PCST, and the radiopurity was >99% (calculated based on ²²⁵Ac, ²²⁷Th, and ²²³Ra). The capacity of the PCST inorganic ion exchange for Ba

SUBMITTER: Fitzsimmons J 

PROVIDER: S-EPMC6694158 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature