硒和砷的色谱分离：一种潜在的 (72)Se/(72)As 发生器。
Chromatographic separation of selenium and arsenic: A potential (72)Se/(72)As generator.
机构信息
Department of Chemistry, University of Missouri, Columbia, MO 65211, United States.
University of Missouri Research Reactor Center, Columbia, MO 65211, United States.
出版信息
J Chromatogr A. 2014 May 2;1340:109-14. doi: 10.1016/j.chroma.2014.03.033. Epub 2014 Mar 16.
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.
摘要
开发了一种阴离子交换方法来分离硒和砷，以便在 (72)Se/(72)As 发生器中使用。从母核 (72)Se 中分离子核 (72)As 是基于两种含氧酸根在其最高氧化态下的相对酸碱行为。在 pH 值为 1.5 时，硒酸盐作为 HSeO4(-) 和 SeO4(2-) 保留在强碱性阴离子交换树脂上，而中性砷酸 H3AsO4 则被洗脱。
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