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稀土元素的薄层色谱分析,由于它既有较好的分离能力,又有设备简单,操作方便, 易于推广等优点引起了人们的重视。本文总结了近十几年来稀土元素薄层色谱分析的发展过程、正反相色谱展开条件、衍生物薄层色谱,以及对吸附剂、展开剂的条件选择和对R_f值的影响等问题进行了归纳和讨论。 (一) 稀土元素反相薄层色谱 1964年Pierce等首先用反相薄层色谱来分离稀土元素,作者用Corvic(氯乙烯/乙烯基乙酸酯共聚物)和HDEHP为固定相,用0.25—0.9N盐酸为流动相对La-Pr-Sm,Gd-Tb-Er,Nd-Eu-Tb进行了分离。 Holzapfel利用硅胶浸渍HDEHP作固定相,用盐酸或硝酸作流动相,分离了La-Ce-Pr-Sm,
Thin layer chromatography of rare earth elements, because of its good separation ability, but also the equipment is simple, easy to operate, easy to promote and other advantages caused people’s attention. This article summarizes the development of rare earth element thin-layer chromatographic analysis in the last ten years, the conditions of forward-reverse phase chromatography, thin-layer chromatography of derivatives, the choice of conditions for adsorbents and solvents, and the influence on R_f values Summarize and discuss. (I) REE Thin-Layer Chromatography Pierce et al. First used reverse-phase thin-layer chromatography to separate rare earth elements in 1964. The author used Corvic (vinyl chloride / vinyl acetate copolymer) and HDEHP as the stationary phase, 0.9N hydrochloric acid as the mobile phase of La-Pr-Sm, Gd-Tb-Er, Nd-Eu-Tb were separated. Holzapfel silica gel impregnated HDEHP as the stationary phase, with hydrochloric acid or nitric acid as the mobile phase, the separation of La-Ce-Pr-Sm,