Separation of Lanthanides by High-Speed Countercurrent Chromatography with Organophosphate Ester
作者:
Zhongming Ma,
Xiaoxiang Zheng,
期刊:
Journal of Liquid Chromatography & Related Technologies
(Taylor Available online 1996)
卷期:
Volume 19,
issue 20
页码: 3255-3263
ISSN:1082-6076
年代: 1996
DOI:10.1080/10826079608014577
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
High-speed countercurrent chromatography is a recently developed separation method that has been remarkably improved in both separating efficiency and separation time. In this paper, this advanced countercurrent chromatographic method was applied to the separation of lanthanides. In combination with the measurement of the partition coefficient of lanthanides, a suitable solvent system was chosen. The separation of a mixture containing the trivalent lanthanides La, Ce, Pr and Nd was performed with 0.15M P507(2-ethylhexyl-2-ethylhexyl hydrogen phosphate) chloroform : hydrochloric acid, pH=2.93, (1:1, V/V) solvent system. The resolution of adjacent bands was enhanced with increasing rotational speed, and was reduced with increasing flow rate of the mobile phase. This enhancement resulted from an increasing number of theoretical plates. Mutual separation of adjacent lanthanides was accomplished with adequate resolution.
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