DETERMINATION OF URANIUM IN ROCKS FOLLOWING ITS SEPARATION BY THE BICARBONATE METHOD

Journal Article · Tue Dec 31 23:00:00 EST 1957 · Magyar Kem. Lapja

OSTI ID:4157263

Upor, E; Fekete, L; Nagy, G

From the precipitate of (NH/sub 4/)/sub 2/U/sub 2/O/sub 7/, which is obtained by the action of NH/sub 4/OH on a solution containing uranium, the uranium is usually dissolved by treatment with a carbonat of an alkali metal. However, in the presence of NH/sub 4/OH and Fe. a portion of uranium (about 60%) remains in the precipitate owing to adsorption. It was found that this defect is eliminated in the presence of Th(OH)/sub 4/. In the determination of uranium. prior to the precipitation with ammonia, thorium salt (20 mg thorium per approximately 6 mg uranium) is added to the solution. After 0.5 hr the precipitate is filtered off and dissolved in 50 to 70 ml of hot 5% solution of Na/ sub 2/CO/sub 3/. the solution is acidified with sulfuric acid, treated with a reducing agent, and titrated with 0.005 N solution of dicator. A correction is made for dissolving iron (30 to 40 gamma ).

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-14-024109
• OSTI ID: 4157263
• Journal Information: Magyar Kem. Lapja, Journal Name: Magyar Kem. Lapja Vol. Vol: 13
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ADSORPTION
ALKALI METALS
AMINO ACIDS
AMMONIA
AMMONIUM COMPOUNDS
ANTHRANILIC ACID
CARBONATES
CHEMICAL REACTIONS
CHEMISTRY
FILTERS
HYDROXIDES
IRON
ORGANIC ACIDS
PHENYL RADICALS
PRECIPITATION
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
QUANTITY RATIO
ROCKS
SEPARATION PROCESSES
SODIUM CARBONATES
SOLUTIONS
THORIUM HYDROXIDES
URANATES
URANIUM
URANIUM COMPOUNDS
VANADIUM COMPOUNDS