CONCERNING THE POTENTIOMETRIC DETERMINATION OF LANTHANUM, CERIUM, PRASEODYMIUM, NEODYMIUM, AND SAMARIUM
with K/s ub 4/Fe(CN)/sub 6/ and Na/sub 2/C/sub 2/O/sub 4/ it is shown that the y are hydrolytic precipitation reactions and there on potentiomnetric titration any kind of H electrode can be used (quinhydrone, antimony, glass). The possibility is shown of a potentiometric determnination of Ce, La, Nd, Pr, and Sm by titration with NaOH solution. The effect of elements of the analytic group III and of Mg on potentiometric titration of Ce is described. The effects of the different variables in the copper coprecipitation method for remnoving ruthenium from plant solutions are presented in graphical form and are discussed. Liter scale experimneQts with the copper sulfide method and also with graphite, charcoal and antimony sulfide columns are described. The mechanism of the ruthenium removal process is discusscd. It is concluded that although the graphite column process described is more efficient than a series of butex cycles in decontaminating uranium solutions fromn rutheniumn, the engineering problems that would be involved weigh heavily in favor of the latter process. (auth)
- Research Organization:
- Commission on Analytical Chemistry of the Academy of Sciences, USSR
- NSA Number:
- NSA-12-006514
- OSTI ID:
- 4335568
- Journal Information:
- Trans. Comm. Anal. Khim. Akad. Nauk S.S.S.R., Journal Name: Trans. Comm. Anal. Khim. Akad. Nauk S.S.S.R. Vol. Vol: 7, No. 10
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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