SEPARATION AND PRECONCENTRATION OF ACTINIDES FROM ACIDIC MEDIA BY EXTRACTION CHROMATOGRAPHY
SEPARATION AND PRECONCENTRATION OF ACTINIDES FROM ACIDIC MEDIA BY EXTRACTION CHROMATOGRAPHY
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DOI：
10.1016/0003-2670(93)85194-o
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发表时间：
1993-09-10
影响因子：
6.2
通讯作者：
DIAMOND, H
中科院分区：
文献类型：
--
作者：
HORWITZ, EP;CHIARIZIA, R;DIAMOND, H
硝酸和盐酸的浓度和宏观水平的选定元素上的锕系元素离子的吸附由一种新的萃取色谱树脂组成的溶液中的辛基（苯基）-N，N-二异丁基氨基甲酰基甲基氧化膦在三正丁基磷酸盐支持的惰性聚合物基板的影响进行了系统的检查。锕系元素吸附被证明在高（> 1 M）硝酸浓度下是最有效的，尽管四价和六价锕系元素甚至从稀（例如，0.05 M）硝酸溶液。几种常见阴离子的宏观浓度（例如，PO 43-和SO 42-）或络合剂（例如，草酸）对三价锕系元素的吸附没有不利影响，而降低了四价锕系元素的吸附。这种影响，连同氧化态的调整，显示提供了一个基础，个别锕系元素的顺序洗脱和从环境和生物基质中的锕系元素的分离。
A systematic examination of the effect of nitric and hydrochloric acid concentrations and of macro levels of selected elements on the sorption of actinide ions by a novel extraction chromatographic resin comprised of a solution of octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide in tri-n-butyl phosphate supported on an inert polymeric substrate is described. Actinide sorption is demonstrated to be most efficient at high ( > 1 M) nitric acid concentrations, although tetra- and hexavalent actinides are strongly retained even from dilute (e.g., 0.05 M) nitric acid solutions. Macro concentrations of several common anions (e.g., PO43- and SO42-) or complexing agents (e.g., oxalic acid) are shown not to adversely affect the sorption of trivalent actinides, while reducing the sorption of tetravalents. Such effects, together with oxidation state adjustments, are shown to provide a basis for the sequential elution of individual actinides and for actinide isolation from environmental and biological matrices.