THE DETERMINATION OF TANTALUM IN NIOBIUM
Technical Report
·
OSTI ID:4307197
The metal is dissolved in hydrofluoric and nitric acids. Hydrochloric acid is added and the tantalum is extracted with methyl isobutyl ketone. The tantalum is removed from the ketone layer by precipitation with ammonium hydroxide. The tantalum precipitate is dissolved in hydrofluoric and hydrochloric acids, reextracted from a hydrochloric acid medium and converted to the hydroxide. The hydroxide is fased with potassium pyrosulfate, and the tantalum determined spectrophotometrically using the tantalum pyrogallol system. Photometric measurement is made at a wave length of 355 mu in 5 cm cells. (auth)
- Research Organization:
- Westinghouse Electric Corp. Bettis Plant, Pittsburgh
- NSA Number:
- NSA-12-010404
- OSTI ID:
- 4307197
- Report Number(s):
- WAPD-CTA(GLA)-542
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AMMONIUM COMPOUNDS
BUTYL RADICALS
CHEMISTRY
HYDROCHLORIC ACID
HYDROFLUORIC ACID
HYDROXIDES
KETONES
LABORATORY EQUIPMENT
MEASURED VALUES
MELTING
METHYL RADICALS
NIOBIUM
NITRIC ACID
PHOTOMETRY
POTASSIUM SULFATES
PRECIPITATION
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
SOLUTIONS
SOLVENT EXTRACTION
SPECTROSCOPY
TANTALUM
BUTYL RADICALS
CHEMISTRY
HYDROCHLORIC ACID
HYDROFLUORIC ACID
HYDROXIDES
KETONES
LABORATORY EQUIPMENT
MEASURED VALUES
MELTING
METHYL RADICALS
NIOBIUM
NITRIC ACID
PHOTOMETRY
POTASSIUM SULFATES
PRECIPITATION
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
SOLUTIONS
SOLVENT EXTRACTION
SPECTROSCOPY
TANTALUM