It is noteworthy that there is far less information on the chemistry of the element actinium than for most of the elements of the actinide series. The reason for this scarcity may be explained, in part, by the lack of availability of actinium isotopes, particularly 225Ac (half-life 10.0 days) and 227Ac (half-life 21.77 years). However, with the increased interest in alpha immunotherapy, there has been a need to simplify the recovery and purification of actinium isotopes.            We have developed two highly efficient classes of extraction chromatographic resins for the recovery and purification of Ac from 229Th/225Ra sources, proton bombarded 232Th targets, 227Ac/Be neutron sources and natural uranium. The first class of resins is based on di-alkyl phosphoric and phosphonic acid extractants. The second class of resins is based on the tetra-alkyl diglycolamides moiety. Flowsheets demonstrating the use of these resins will be presented.

Recent advances in the recovery and purification of actinium isotopes

243rd National Meeting (2012)

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