Binding of bismuth cation with two newly synthesized picolinate containing acyclic ( L1 ) and macrocyclic ( L2 ) ligands was studied. Both ligands demonstrate complex formation with Bi 3+ under ambient conditions with high complexation constants. Serum stability of the complexes was investigated in serum protein excess of 10- and 100-times. Experiments with no-carrier-added radiobismuth ( 207 Bi and 213 Bi) were performed. A one-column 225 Ac/ 213 Bi generator system, based on Ac resin (Triskem Inc.), was tested. The overall yield of 213 Bi was exceeding 85% with 225 Ac breakthrough below 10 −4 %.
Retention of Pa(V) on the extraction chromatographic resins (DGA, TRU, TEVA, UTEVA and octanol resin) produced by Triskem International Company has been studied. The capacity factor k′ values of Pa(V) were determined in static experiments (batch technique) for a wide concentration range of nitric and hydrochloric acid solutions. The obtained data are useful to devise chromatographic separation of Pa(V) from other actinides.