Chromatographic separation of selenium and arsenic: A potential super(72)Se/ super(72)As generator

An anion exchange method was developed to separate selenium and arsenic for potential utility in a super(72)Se/ super(72)As generator. The separation of the daughter super(72)As from the super(72)Se parent is based on the relative acid-base behavior of the two oxo-anions in their highest oxidation s...

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Bibliographic Details
Published in:Journal of Chromatography A 2014-05, Vol.1340, p.109-114
Main Authors: Wycoff, Donald E, Gott, Matthew D, DeGraffenreid, Anthony J, Morrow, Ryan P, Sisay, Nebiat, Embree, Mary F, Ballard, Beau, Fassbender, Michael E, Cutler, Cathy S, Ketring, Alan R, Jurisson, Silvia S
Format: Article
Language:English
Subjects:
Anion exchanging
Arsenic
Chromatography
Exchange
Generators
Selenium
Separation
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Summary:An anion exchange method was developed to separate selenium and arsenic for potential utility in a super(72)Se/ super(72)As generator. The separation of the daughter super(72)As from the super(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 HSeO sub(4) super(-) and SeO sub(4) super(2-), while neutral arsenic acid, H sub(3)AsO sub(4), is eluted.
ISSN:0021-9673
DOI:10.1016/j.chroma.2014.03.033