PHOSPHOTUNGSTATE PRECIPITATION METHOD OF ANALYSIS OF RADIOACTIVE CESIUM IN SOLUTIONS OF LONG LIVED FISSION PRODUCT ACTIVITIES
A very rapid and simple procedure is presented for the determination of cesium activity in an aqueous solution of the long lived fission product activities. The procedure consists of the precipitation of Cs as the phosphotungstate from a 5n HNO{sub 3} solution by the addition of phosphotungstic acid. The precipitate is washed twice with 5N HNO{sub 3}, dried and counted. Since the Cs recovery is complete, no radiochemical yield determination is necessary. Self-absorption and self-scattering effects in counting are made to cancel each other by choosing the right amount of Cs carrier. Good decontamination from the other long lived fission product activities and high radiochemical purity are obtained. The method gives a maximum deviation from the average result of less thatn +-4%.
- Research Organization:
- Chalk River Project (Canada)
- NSA Number:
- NSA-09-000879
- OSTI ID:
- 4399065
- Report Number(s):
- PDB-128
- Country of Publication:
- Canada
- Language:
- English
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