GRAVIMETRIC DETERMINATION OF TUNGSTEN BY HOMOGENEOUS PRECIPITATION
Journal Article
·
· Talanta (England)
A homogeneous precipitation method was developed for the gravimetric determination of tungsten, by thermal decomposition of soluble peroxytungstate from a nitric acidhydrogen peroxide solution. It appears that in all cases, especially for small concentrations, the tungsten recovery is superior to the classical techniques using cinchonine or beta -naphthoquinoline. Furthermore, co-precipitation of molybdenum and vanadium are reduced to a considerable extent. The study of the co-precipitation process shows that the distribution coefficients foilow a linear pattern for both contaminants. The method was tested with good results on a number of standard tungsten alloy steels, corrections for incomplete precipitation and co-precipitation being applied on the basis of the experimentally found values. (auth)
- Research Organization:
- Universiteit, Ghent
- NSA Number:
- NSA-15-030614
- OSTI ID:
- 4841018
- Journal Information:
- Talanta (England), Journal Name: Talanta (England) Vol. Vol: 8; ISSN TLNTA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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