Actinide separations for. cap alpha. spectrometry using neodymium fluoride coprecipitation

Journal Article · Thu May 01 00:00:00 EDT 1986 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00297a059· OSTI ID:5699348

Hindman, F D

A procedure was developed in which a 10-g soil sample was fused in potassium fluoride followed by a pyrosulfate fusion. The flux was dissolved in dilute hydrochloric acid and thorium, uranium, plutonium, and americium were coprecipitated on barium sulfate. The barium sulfate was dissolved and precipitated in the presence of diethylenetriaminepentaacetic acid (DTPA) to separate the actinides from barium sulfate. The filtrate was decomposed, fused in a pyrosulfate flux, and dissolved in dilute nitric acid. Thorium was separated from the other actinides by coprecipitation on ceric iodate. Uranium, plutonium, and americium were separated sequentially, one from the other, by oxidizing them to their highest oxidation states followed by a series of coprecipitations of the nuclides. The isolated nuclides were coprecipitated on neodymium fluoride, filtered, and counted by ..cap alpha.. spectrometry. The recoveries ranged from 85% to 95%. The resolution for full width at half maximum (fwhm) was between 60 and 70 keV. Decontamination factors ranged between 10/sup 3/ and 10/sup 4/. 8 references.

• Research Organization: Dept. of Energy, Idaho Falls, ID
• OSTI ID: 5699348
• Journal Information: Anal. Chem.; (United States), Vol. 58:6
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AMERICIUM
ALPHA DOSIMETRY
COPRECIPITATION
FILTRATION
OXIDATION
PLUTONIUM
THORIUM
URANIUM
EXPERIMENTAL DATA
NEODYMIUM FLUORIDES
QUANTITATIVE CHEMICAL ANALYSIS
VALENCE
ACTINIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
DATA
DOSIMETRY
ELEMENTS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INFORMATION
METALS
NEODYMIUM COMPOUNDS
NUMERICAL DATA
PRECIPITATION
RARE EARTH COMPOUNDS
SEPARATION PROCESSES
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
400105* - Separation Procedures
400103 - Radiometric & Radiochemical Procedures- (-1987)