Determination of niobium in the presence of tantalum after extraction with methyl isobutyl ketone
✍ Scribed by Paschoal Senise; Lília Sant'Agostino
- Publisher
- Elsevier Science
- Year
- 1960
- Tongue
- English
- Weight
- 167 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0003-2670
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📜 SIMILAR VOLUMES
Niobium(V) (O-20 ,ug) can be determined spectrophotometrically after its extraction as ethylene-bis-(triphenylphosphonium) thiocyanatoniobate (V) into chloroform. The effects of diverse ions and masking studies are reported. The system is applied to the determination of mobmm in a range of steels.
A flame atomic absorption spectrometric method is described for the determination of ruthenium in organic solutions containing toluene, 1-hexene, 1-heptanol and 1-heptanal. Ethanol and methyl isobutyl ketone (MIBK) were tested as solvents. In addition to burner position and acetylene flow, the compo
Trace impurities in tantalum have been isolated by extracting the tantalum matrix from aqueous solutions containing hydrofluoric and hydrochloric acid into methyl isobutyl ketone. A study on the extractability of the fluoride complex by methyl isobutyl ketone and diisopropyl ketone indicated that th