ANALYSIS FOR Np$sup 237$ IN NITRIC ACID SOLUTIONS
A method was developed for the analysis of Np/sup 237/ in nitric acid solutions that contained uranium, plutonium, and fission products. Neptunium was extracted with thenoyltrifluoroacetone after reduction to the (IV) state with ferrous sulfamate. The alpha activity of the sepa rated neptunium was then measured with an alpha pulse height analyzer, and the degree of separation of neptunium from other alpha emitters was determined. The precision of the analysis depended on the total amount of Np/sup 237/ present in the sample. A relative standard deviation of 2 to 5% was observed for samples that contained more than 180 alpha disintegrations of neptunium per minute. For activities in the range of 10 disintegrations per minute the relative standard deviation was from 10 to 25%. (auth)
- Research Organization:
- Du Pont de Nemours (E.I.) & Co. Savannah River Lab., Augusta, Ga.
- NSA Number:
- NSA-13-009687
- OSTI ID:
- 4289534
- Report Number(s):
- DP-316
- Country of Publication:
- United States
- Language:
- English
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