title: Chromatographic separation of selenium and arsenic: A potential (72)Se/(72)As generator.
abstract: An anion exchange method was developed to separate selenium and arsenic for potential utility in a (72)Se/(72)As generator. The separation of the daughter (72)As from the (72)Se 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 SeO4(2-), while neutral arsenic acid, H3AsO4, is eluted.
authors.affiliation: Department of Chemistry, University of Missouri, Columbia, MO 65211, United States.
authors.forename: Donald E
authors.initials: DE
authors.lastname: Wycoff
authors.affiliation: Department of Chemistry, University of Missouri, Columbia, MO 65211, United States.
authors.forename: Matthew D
authors.initials: MD
authors.lastname: Gott
authors.affiliation: Department of Chemistry, University of Missouri, Columbia, MO 65211, United States.
authors.forename: Anthony J
authors.initials: AJ
authors.lastname: DeGraffenreid
authors.affiliation: Department of Chemistry, University of Missouri, Columbia, MO 65211, United States.
authors.forename: Ryan P
authors.initials: RP
authors.lastname: Morrow
authors.affiliation: Department of Chemistry, University of Missouri, Columbia, MO 65211, United States.
authors.forename: Nebiat
authors.initials: N
authors.lastname: Sisay
authors.affiliation: University of Missouri Research Reactor Center, Columbia, MO 65211, United States.
authors.forename: Mary F
authors.initials: MF
authors.lastname: Embree
authors.affiliation: Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, United States.
authors.forename: Beau
authors.initials: B
authors.lastname: Ballard
authors.affiliation: Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, United States.
authors.forename: Michael E
authors.initials: ME
authors.lastname: Fassbender
authors.affiliation: University of Missouri Research Reactor Center, Columbia, MO 65211, United States.
authors.forename: Cathy S
authors.initials: CS
authors.lastname: Cutler
authors.affiliation: University of Missouri Research Reactor Center, Columbia, MO 65211, United States.
authors.forename: Alan R
authors.initials: AR
authors.lastname: Ketring
authors.affiliation: Department of Chemistry, University of Missouri, Columbia, MO 65211, United States. Electronic address: jurissons@missouri.edu.
authors.forename: Silvia S
authors.initials: SS
authors.lastname: Jurisson
mesh_terms: D000837:Anion Exchange Resins; D001151:Arsenic / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid; D002852:Chromatography, Ion Exchange / Q000379:methods*; D010084:Oxidation-Reduction; D011868:Radioisotopes / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D012644:Selenium Radioisotopes / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D000837:Anion Exchange Resins; D011868:Radioisotopes; D012644:Selenium Radioisotopes; D001151:Arsenic
keywords: As-72; Ion exchange; Radionuclide generator; Se-72