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THE LANTHANUM FLUORIDE CO-PRECIPITATION METHOD FOR THE DETERMINATION OF PLUTONIUM THE EFFICIENCY OF PRECIPITATION OF THE LANTHANUM CARRIER AS FLUORIDE

Technical Report ·
OSTI ID:4337662

The efficiency of precipitation of LaF/sub 3/ in the co-precipitation method for determining Pu has been investigated using La/sup 140/ as tracer. The procedure has been shown to precipitute more than 99.9% of the carrier La as fluoride. Omission of the period of standing results in a considerable proportion of La remaining unprecipitated but this may be offset by a suitable increase in the centrifuging time. A modified procedure is suggested in which the standing time is reduced from overnight to 1 to 2 hours and the centrifuging time increased from 2 to 5 minutes. (auth)

Research Organization:
United Kingdom Atomic Energy Authority. Research Group. Atomic Energy Research Establishment, Harwell, Berks, England
NSA Number:
NSA-12-005886
OSTI ID:
4337662
Report Number(s):
AERE-C/R-2382
Country of Publication:
United Kingdom
Language:
English