Abstract and subjects
An anion exchange method was developed to separate selenium and arsenic for potential utility in a Se-72/As-72 generator. The separation of the daughter As-72 from the Se-72 parent is based on the relative acid-base behavior of the two oxo-anions in their highest oxidation states. At pH 1.5, selenate is retained on strongly basic anion exchange resin as HSeO4- and SeO42-, while neutral arsenic acid, H3AsO4, is eluted. (C) 2014 Elsevier B.V. All rights reserved.