Determination op the various oxidation degrees of manganese in silicate glasses and glass ceramics
β Scribed by V. A. Malevannyi; N. I. Min'ko; T. S. Bakhmutova
- Publisher
- Springer US
- Year
- 1993
- Tongue
- English
- Weight
- 259 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0361-7610
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## Ahstract A simple spectrophotometnc method was developed for the determmatlon of traces of vanadmm present m glass and ceramic raw matenals The method involves the formatlon of a vanadmm-sahcylhydroxamoxamlc acid complex m 1 M HF-H,SO, medmm, followed by extractlon on polyether-based polyuretha
Coal ash and silicate samples are completely resolved by dissolution in nitric and hydrofluoric acids. Boron is retained during a volume-reduction step while most of the silicon is volatilized. Excess of fluoride is complexed by addition of aluminium chloride solution. After dilution, the sample sol