Anion exchange separation of uranium, thorium and bismuth

Autor: J. Korkisch, F. Tera
Rok vydání: 1962
Předmět:
Zdroj: Fresenius' Zeitschrift f�r Analytische Chemie. 186:290-295
ISSN: 1618-2650
0016-1152
DOI: 10.1007/bf00626136
Popis: A method for the anion exchange separation of uranium, thorium and bismuth is described, using the strongly basic anion exchanger Dowex 1 X8. These three elements are simultaneously adsorbed on the resin (nitrate form) from a solution consisting of 96% n propanol and 4% 5 n nitric acid. The separation of thorium and bismuth from uranium is effected by washing the column with a mixture consisting of 80% methanol and 20% 5n nitric acid (elution of uranium). To separate thorium from bismuth the resin is then treated with a solution consisting of 80% methanol and 20% 6n hydrochloric acid whereby the thorium is eluted. Finally the bismuth is removed by washing the column with 1 n nitric acid. The experimental conditions for this separation scheme have been selected after the determination of the distribution coefficients of uranium, thorium, and bismuth in different mixtures of aliphatic alcohols with nitric and hydrochloric acid.
Databáze: OpenAIRE