4-(2-PYRIDYLAZO)RESORCINOL AS A SELECTIVE AND SENSITIVE SPECTROPHOTOMETRIC REAGENT FOR NIOBIUM
Journal Article
·
· Talanta (England)
The reagent 4-(2-pyridylazo)resorcinol, PAR, in the presence of EDTA, gives a color reaction with quinquevalent niobium which is not interfered with by any of the metals which normally accompany niobium. Of some 30 cations examined, only uranium(VI) and vanadium(V) interfered seriously. The reaction provided a sensitive method for the spectrophoto etric determination of niobium, and is also applicable as a spot-test for amounts of niobium(V) down to 0.1 mu g. Even tantalum does not interfere when present in twenty-fold amounts, provided suffi
- Research Organization:
- Univ. of Birmingham, Eng.
- NSA Number:
- NSA-17-001408
- OSTI ID:
- 4772238
- Journal Information:
- Talanta (England), Journal Name: Talanta (England) Vol. Vol: 9; ISSN TLNTA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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