REDOX SUBSTOICHIOMETRY IN ISOTOPE DILUTION ANALYSIS. I. DETERMINATION OF ANTIMONY IN THE PRODUCT OF RADIOANTIMONY 124Sb

Redox substoichiometry in the isotope dilution analysis of antimony was studied. As the substoichiometric reaction the oxidation of trivalent antimony to pentavalent with potassium permanganate was used, followed by the BPHA extraction of trivalent antimony. The redox substoichiometry was applied to the determination of antimony content in 124Sb obtained from JAERI. The content determined was 0.481±0.02 μg, which agreed with the certified value.