Spectrophotometric determination of uranium and plutonium present together in nitric acid solutions

Journal Article · Wed Jul 01 00:00:00 EDT 1987 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:5904188

Levakov, B I; Mishenev, V B; Nezgovorov, N Yu; Ryazanova, G K; Timofeev, G A

A method is described for the spectrophotometric determination of uranium(VI) and plutonium(IV) in nitric acid solutions. Uranium is determined as a light-absorbing complex with arsenazo III in 0.05 M nitric acid at lambda = 654 nm, plutonium as a light-absorbing complex with xylenol orange in 0.1 M nitric acid at lambda = 540 nm. For the determination of uranium, DTPA is introduced into the photometric solution to mask the plutonium together with the tetravalent, and some trivalent, elements. The relative mean-square deviation of the results does not exceed 0.03 in the concentration ranges 0.5-5 ..mu..g U/ml, 1-3 ..mu..g Pu/ml.

• OSTI ID: 5904188
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 28:6; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

050400* -- Nuclear Fuels-- Feed Processing
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
ABSORPTION SPECTRA
ACTINIDE COMPLEXES
ACTINIDE COMPOUNDS
AMINO ACIDS
AROMATICS
ARSENAZO
ARSENIC COMPOUNDS
ARSONIC ACIDS
AZO COMPOUNDS
CARBOXYLIC ACIDS
CHELATING AGENTS
CHEMICAL ANALYSIS
COMPLEXES
COMPLEXOMETRY
DRUGS
DTPA
DYES
EXTRACTION
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INDICATORS
INORGANIC ACIDS
NITRIC ACID
OPACITY
OPTICAL PROPERTIES
ORGANIC ACIDS
ORGANIC ARSENIC COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHENOLS
PHYSICAL PROPERTIES
PLUTONIUM COMPLEXES
PLUTONIUM COMPOUNDS
POLYPHENOLS
QUANTITATIVE CHEMICAL ANALYSIS
QUANTITY RATIO
RADIOPROTECTIVE SUBSTANCES
REAGENTS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SPECTRA
SPECTROPHOTOMETRY
SULFONIC ACIDS
TRANSURANIUM COMPLEXES
TRANSURANIUM COMPOUNDS
URANIUM COMPLEXES
URANIUM COMPOUNDS
VALENCE
XYLENOL ORANGE