Spectrophotometric Determination of Uranium with 4-(2-Pyridylazo)resorcinol.
A highly sensitive and selective method is described for the spectrophotometric determination of uranium. The chromogenic reagent is 4-(2- pyridylazo)resorcinol (PAR), and the determination is carried out at pH 8.0 in the presence of a mixed complexing solution containing (1,2cyclohexylenedinitrilo)tetraacetic acid, sulfosalicylate, and fluoride. Most metals, including thorium, are masked by the complexing solution. Uranium forms a 1: 1 complex with PAR, which has a molar absorptivity of 38,700 at 530 M mu . A preliminary separation of uranium from gross amounts of impurities may be accomplished by a rapid chelating-resin ion exchange procedure. (auth)
- Research Organization:
- Australian Atomic Energy Commission Research Establishment, Lucas Heights, New South Wales
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-038925
- OSTI ID:
- 4628871
- Journal Information:
- Analytical Chemistry, Journal Name: Analytical Chemistry Journal Issue: 11 Vol. 35; ISSN 0003-2700
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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