DETERMINATION OF COPPER IN HIGH-PURITY NIOBIUM, TANTALUM, MOLYBDENUM AND TUNGSTEN METALS WITH BATHOCUPROINE
Journal Article
·
· Talanta (England)
A spectrophotometric method for determining 0.0005 to 0.125% of copper in high-purity niobium, tantalum, molybdenum, and tungsten metals is described. After sample dissolution and reduction of copper to the univalent state with ascorbic acid, the yellow complex formed by copper(I) and bathocuproine (2,9- dimethyl-4,7-diphenyl-1,10phenanthroline) is extracted into n-amyl alcohol and the absorbance of the resulting extract is determined at 476 m . Other impurities present in the four high-purity metals described do not interfere in the proposed method. (auth)
- Research Organization:
- Dept. of mines and Technical Surveys, Ottawa
- NSA Number:
- NSA-17-025140
- OSTI ID:
- 4713059
- Journal Information:
- Talanta (England), Journal Name: Talanta (England) Vol. Vol: 10; ISSN TLNTA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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