DETERMINATION OF THORIUM IN PLUTONIUM-THORIUM ALLOYS
A spectrophotometric method used in the determination of thorium was modified for the purpose of anulyzing plutorium alloys which contained 0.01 to 0.8% thorium. Absorbance values were measured at 545 m mu for solutions containing thorium and thorin, the organic reagent added to form a colored complex with thorium in the presence of plutonium(III). With plutonium-thorium solution samples, equivalent to dissolved alloys containing 0.2 to 0.8% thorium, the average recovery of thorium was 99.6 plus or minus 1.5%. For similar samples containing 0.01 to 0.2% thorium, the average recovery was 101.0 plus or minus 3.4%, after the thorium was separated from plutonium by precipitation of thorium fluoride with the aid of lanthanum fluoride as a carrier. (auth)
- Research Organization:
- Los Alamos Scientific Lab., N. Mex.
- DOE Contract Number:
- W-7405-ENG-36
- NSA Number:
- NSA-14-000169
- OSTI ID:
- 4221214
- Report Number(s):
- La-1839(Del.)
- Resource Relation:
- Other Information: Decl. with deletions Oct. 5, 1956. Orig. Receipt Date: 31-DEC-60
- Country of Publication:
- United States
- Language:
- English
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