THE COLORIMETRIC MICRODETERMINATION OF TUNGSTEN IN URANIUM CONPOUNDS
A method for the rapid microdetermination of tungsten in uranium compounds was developed. Tungsten(VI) is reduced to tungsten(V) using amalgamated bismuth and stannous chloride in concentrated hydrochloric acid. The yellow tungsten(V)--thiocyanate complex is then formed and extracted with butyl acetate. The tungsten content is determined by comparing the optical density of the extract at a wave length of 405 M mu to a standard curve. From 1 to 250 micrograms of tungsten can be determined in the presence of two grams of uranium. Only molybdenum interferes seriously and its interference can be eliminated by pyrohydrolysis of the sample or by a simple colorimetric correction. Twenty-five micrograms of tungsten can be determined with a precision of plus or minus 5%. (auth)
- Research Organization:
- Goodyear Atomic Corp., Piketon, Ohio
- DOE Contract Number:
- AT-(33-2)-1
- NSA Number:
- NSA-17-030471
- OSTI ID:
- 4685291
- Report Number(s):
- GAT-T-1120
- Country of Publication:
- United States
- Language:
- English
Similar Records
Colorimetric microdetermination of boron
STUDIES ON THE MICRODETERMINATION OF METALS BY EXTRACTING THE INORGANIC COMPOUNDS WITH ORGANIC SOLVENTS. III. MICRODETERMINATION OF MOLYBDENUM
Related Subjects
BISMUTH ALLOYS
BUTYL RADICALS
CHEMISTRY
COLOR
CYANIDES
DIAGRAMS
ERRORS
HYDROCHLORIC ACID
HYDROLYSIS
INTERFERING ELEMENTS
MERCURY ALLOYS
MOLYBDENUM
ORGANIC SULFUR COMPOUNDS
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
REDUCTION
SOLVENT EXTRACTION
STANDARDS
TIN CHLORIDES
TRACE AMOUNTS
TUNGSTEN
TUNGSTEN COMPLEXES
TUNGSTEN COMPOUNDS
URANIUM COMPOUNDS