化学
锶
硝酸
吸附
选择性
萃取(化学)
碱土金属
无机化学
碱金属
核化学
镎
钚
螯合树脂
金属
色谱法
水溶液中的金属离子
吸附
有机化学
催化作用
作者
E. P. Horwitz,R. Chiarizia,Mark L. Dietz
标识
DOI:10.1080/07366299208918107
摘要
ABSTRACT The effect of nitric acid concentration on the selectivity of a novel extraction chromatographic resin consisting of an octanol solution of 4,4′(5′)-bis(t-butyl-cyclohexano)-18-crown-6 sorbed on an inert polymeric support for strontium over a number of alkali, alkaline earth, and other metal cations was evaluated. The effect of macro quantities of selected elements on strontium retention by the resin was also examined. The resin is shown to exhibit excellent selectivity for strontium over nearly all of the test elements; only lead and tetravalent neptunium, polonium, and plutonium show significant affinity for the material. In addition, concentrations of calcium or sodium ion up to ∼ 0.1 M. are shown not to diminish the sorption of strontium appreciably. Several useful radiochemical separation schemes devised on the basis of the results obtained are described.
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