Separation of rare earth elements

Zvarova, T. S., Zvara, I. Separation of rare-earth elements by gas chromatography of their chlorides. I. Chromatog. 44, 604 (1969). 

Crown ethers in the separation of rare-earth elements 92CLY77. 

H. Takahashi, K. Miwa and K. Kikuchi, Group-separation of rare-earth elements by use of electrodialysis with a complexing agent, J. Ion Exchange, 1994, 4, 183. 

FIGURE 314. Reprinted with permission from A Natural Historical Chemical Landmark Separation of Rare Earth Elements, University of New Hampshire, October 29, 1999. Copyright 1999 by the American Chemical Society. 

Pin, C 1996. Sequential separation of rare earth elements, thorium, and uranium by miniturized extraction chromatography application to isotope analysis of silicate rocks. Anal. Chim. Acta 339, 79-89. 

Zachmann D.W., 1988, Matrix effects in the separation of rare earth elements, scandium and yttrium, and their determination by inductively coupled optical plasma emission spectrometry. Anal. Ckem., 60, 420-427. 

J. Liq. Chromatogr. Relat. Technol. 1998, 21 (1), 19. Kitazume, E. Bhatnagar, M. Ito, Y. Separation of rare earth elements by high-speed counter-current chromatography. J. Chromatogr. 1991, 538, 133. 

Solvent-soluble impurities are often reduced by a factor of at least 1(H (i.e. a decontamination factor of 1(H) provided their distribution coefficients are widely different from that of the main solute. Where the impurity is completely insoluble in the solvent, a small proportion may still pass with the principal solute by virtue of physical entrainment of tiny aqueous drops in the solvent phase, but decontamination factors of 10 or more have been obtained with some systems, e.g. for the separation of rare earth elements from thorium. 

At the Technical University in Kosice, compounds in aqueous and nonaqueous solutions, electrolytic deposition of aluminum and its alloys from nonaqueous electrolytes [175-177], and electrochemical separation of rare earth elements were studied [178]. 

Used as CHCI3 soln. for extraction-separation of rare earth elements. Golden needles. Sol. CHCI3, C H. Mp 72.1-72.5 p -4.5. 

Used in extractive separation of rare earth elements of the Ce subgroup (xylene) from 0.1-0.2M HNO3. Liq. 

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