SEPARATION OF URANIUM, THORIUM, AND THE RARE EARTHS ELEMENTS BY ANION EXCHANGE
A method is described for the simultaneous quantitative separation of uranium, thorium, the rare earth elements, yttrium, cadmium, lead, and bismuth by means of anion exchange in a nitric acid-acetic acid medium. The anion exchanger employed is the strongly basic resin Dowex 1, X8 (nitrate form). The elements concerned are strongly adsorbed on the resin from a medium consisting of 90% glacial acetic acid and 10% 5N nitric acid. All other elements investigated including iron, aluminum, magnesium, and calcium pass into the effluent and are thus quantitatively separated. For the development of this method measurements of the distribution coefficients were carried out for numerous elements as a function of varying concentrations of nitric acid, acetic acid, and of the elements in question. Analogous experiments were performed in propionic acid media for the sake of comparison. The method was developed particularly for the analysis of marine sediments, A standard sample of homogenized deep sea clay was used as test material. (auth)
- Research Organization:
- Universitat, Vienna
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-18-016131
- OSTI ID:
- 4076648
- Journal Information:
- Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed., Journal Name: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed. Vol. Vol: 36; ISSN ANCHA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Anion exchange separation of uranium, thorium and bismuth
DETERMINATION OF THORIUM IN VARIOUS AQUEOUS SAMPLES BY ANION EXCHANGE. I. ADSORPTION OF THORIUM ON THE ANION EXCHANGE RESIN IN NITRIC ACID-AL OHOL MIXED SOLUTION IN THE PRESENCE OF PHOSPHATE