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前言 一般优于4N La_2O_3中稀土杂质元素的测定均采用化学光谱法,常用的分离手段有离子交换法,虽La与Ce能较好分离,但分离周期较长。Г.И.ЩМАНЕНКОВА曾提出用P_(204)作萃取剂,硅球为载体,在HCl体系可使La与Ce等其它稀土元素定量分离。1674年以来,彭春霖等对于以P_(507)为固定相的萃取色层法做了系统研究,形成了具有中国特色的萃取色谱技术,在高纯稀土元素分析中得到广泛应用。
Preface generally better than 4N La2O3 in the determination of rare earth impurity elements are used chemical spectrometry, the separation method commonly used ion exchange method, although La and Ce can better separation, but longer separation cycle. Г.И.ЩМАНЕНКОВА has proposed the use of P_ (204) as extractant and silica spheres as carrier, which allows the quantitative separation of other rare earth elements such as La and Ce in the HCl system. Since 1674, Peng Chunlin et al. Have systematically studied the extraction chromatography with P_ (507) as the stationary phase, and formed the extraction chromatography with Chinese characteristics, which has been widely used in the analysis of high purity rare earth elements.