ACCURATE DETERMINATION OF URANIUM IN THE PRESENCE OF SMALL AMOUNTS OF MOLYBDENUM. LEAD REDUCTOR AND STANNOUS CHLORIDE METHODS
The conditions have been determined under which the lead reductor may be used for thc accurate determination of uranium containing more than 50 ppm of molybdenum. Results are low and erratic when the widely accepted method of preparing samples in perchloric acid is used. Accurate and precise results are obtained only in the absence of perchloric acid and, therefore, preparation of samples by dissolving in nitric acid and fuming with sulfuric acid is recommended. In addition, the application of the stannous chloride method to the determination of uranium in the presence of up to 6.6% molybdenum has been studied. Accurate results are obtained if the molybodenum content is separately determined and a correction is applied to the basis of a three-electron change. Previous work had suggested a two-electron change for the molybdenum. The effects of other common interferences are evaluated. (auth)
- Research Organization:
- Dow Chemical Co., Denver
- NSA Number:
- NSA-13-013263
- OSTI ID:
- 4267110
- Journal Information:
- Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed., Journal Name: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed. Vol. Vol: 31; ISSN ANCHA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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