THE ANALYSIS OF THORIUM-INDIUM ALLOYS

Technical Report · Sun Jun 01 00:00:00 EDT 1958

OSTI ID:4314985

Milner, G W.C.; Edwards, J W

Indium is quantitatively separated from thorium by solvent extracting it into methyl isobutyl ketone from a solution 0.5M in sodium iodide and 1M in perchloric acid. Both constituents can then be determined volumetrically with EDTA. Thorium--indium alloys are dissolved in nitric acid with the aid of silicofluoride and after fuming to dryness with perchloric acid, the residue is dissolved in water. Indium is separated from an aliquot of the solution and the thorium content of the aqueous layer is obtained by titration with EDTA using xylenol orange as indicator. The organic solvent phase is vigorously stirred with an acetate buffer solution of pH 3 to 3.5 and the back extracted indium is titrated with EDTA using the same indicator. (auth)

• Research Organization: United Kingdom Atomic Energy Authority. Research Group. Atomic Energy Research Establishment, Harwell, Berks, England
• NSA Number: NSA-12-015349
• OSTI ID: 4314985
• Report Number(s): AERE-C/R-2613
• Country of Publication: United Kingdom
• Language: English

Related Subjects

ACETATES
ACIDITY
BUFFERS
BUTYL RADICALS
CHEMICALS
CHEMISTRY
EDTA
EVAPORATION
INDICATORS
INDIUM ALLOYS
KETONES
METHYL RADICALS
MIXING
NITRIC ACID
PERCHLORIC ACID
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
SEPARATION PROCESSES
SILICON FLUORIDES
SODIUM IODIDES
SOLUTIONS
SOLVENT EXTRACTION
THORIUM ALLOYS
TITRATION
WATER
XYLENOL ORANGE