STUDIES ON PREPARATION OF PHOSPHORUS-32
Phosphorus-32 is easily and quantitatively separated from the bulk of sulfur targets by shaking carbon disulflde solutions of neutron irradiated sulfur with dilute ammonia. Extraction with acid solution gives a lower recovery. Bromoform is another solvent for sulfur, however, the low solubility of sulfur in it is not desirable. From the aqueous extract, P/sup 32/ is purified by either ion-exchange or solvent extraction. In the ion-exchange method P/sup 32/ adsorbed on an anion-exchanger column as orthophosphate is eluted with 0.05N hydrochloric acid. Initial small fraction of the eluate is taken as the product. Preliminary removal of the impurity by cation exchange is recommended for processing large quantities of sulfur. In the solvent extraction method, the acidified extract is shaken twice with butyl acethte after addition of a small quantity of ammonium molybdate. Phosphorus-32 is re-extracted with water. For the processing of P/sup 32/, the ion-exchange method is more convenient than the solvent extraction method. According to the carbon disulfide-ammonia extraction followed by ion-exchange purification, the product of P/sup 32/ was obtained with a recovery of 92%. The radiochemical purity was high. (auth)
- Research Organization:
- Japan Atomic Energy Research Inst., Tokyo
- NSA Number:
- NSA-15-008819
- OSTI ID:
- 4094763
- Report Number(s):
- JAERI-1013
- Country of Publication:
- Japan
- Language:
- English
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