Separation of 234Th from 90Y
Abstract
A relatively simple procedure has been developed for the determination of 90Sr in natural aqueous samples. The method consists mainly of a Fe(III)-hydroxide co-precipitation step, followed by the separation of 90Y with the mixture of yttrium-oxalate and yttrium-ammonium-oxalate salts. This method was tested using a large number of natural water samples and 234Th contamination was observed in the prepared yttrium samples. The analysis has therefore been extended to include the separation of thorium from yttrium, which is made by DOWEX-50W-X8 cation exchange resin and citric acid as chelating agent. The experience and results of this new method are discussed.
- Publication:
-
Czechoslovak Journal of Physics Supplement
- Pub Date:
- January 1999
- DOI:
- 10.1007/s10582-999-1054-8
- Bibcode:
- 1999CzJPS..49..715C