Determination of Tungsten in Tungsten Metal and Thoriated Tungsten by a Combination of Gravimetric and Spectrophotometric Techniques
Most of the tungsten is precipitated free from contaminants and the residual tungsten is determined colorimetrically by an improved thiocyanate procedure. The amount of cinchonine used does not interfere with the thiocyanate color. Molybdenum does not interfere. Good precision was obtained and the results compare favorably with the nominal tungsten content as determined by difference. The method is recommended for the determination of tungsten in fabricated tungsten metal, high or moderate purity tungsten powders, and thoriated tungsten.
- Research Organization:
- Frankford Arsenal, Philadelphia
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-15-024822
- OSTI ID:
- 4024232
- Journal Information:
- Analytical Chemistry, Journal Name: Analytical Chemistry Journal Issue: 9 Vol. 33; ISSN 0003-2700
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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