Abstract
Abstract111In and 109Cd radionuclides were produced by 31 MeV ‐particle irradiation of natAg target. To separate no‐carrier added (NCA) 111In and 109Cd from bulk Ag, Aqueous Biphasic System (ABS) was constructed using twelve salts and two polyethylene glycol (PEG) combinations. Out of all these combinations, only three salts e. g., Na2SO3, Na‐ malonate and Na‐Tartrate and PEG combinations showed significant separation between bulk Ag and NCA radioisotopes. Addition of catechins extracted from green tea to the above ABS systems increased the separation factors many folds. Highest separation factor (SIn/Ag=5.6×104) for 111In was obtained in Na2SO3‐PEG 4000 and 50 mg catechins system. 109Cd retained in NCA state in the Na‐malonate phase after the extraction of 111In and bulk Ag in the catechin‐PEG phase.
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