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

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, sel...

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Bibliographic Details
Published in:	Journal of chromatography. A Vol. 1340; p. 109
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:	Journal Article
Language:	English
Published:	Netherlands 02-05-2014
Subjects:	Anion Exchange Resins Arsenic - analysis Arsenic - chemistry Arsenic - isolation & purification Chromatography, High Pressure Liquid Chromatography, Ion Exchange - methods Oxidation-Reduction Radioisotopes - analysis Radioisotopes - chemistry Radioisotopes - isolation & purification Selenium Radioisotopes - analysis Selenium Radioisotopes - chemistry Selenium Radioisotopes - isolation & purification Se-72 Ion exchange Radionuclide generator As-72
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Summary:	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.
ISSN:	1873-3778