New chromatographic materials for the separation and concentration of uranium from environmental matrices

Conference · Fri Nov 01 04:00:00 EST 1991 · Transactions of the American Nuclear Society; (United States)

OSTI ID:7115595

Horwitz, E P; Dietz, M L; Chiarizia, R; Diamond, H ^[1]

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1. Argonne National Lab., IL (United States)

Numerous methods have been described for the determination of uranium in a variety of samples. In many instances, the low concentrations of uranium encountered and the presence of high levels of matrix constituents make a direct determination difficult. Consequently, various separation and preconcentration techniques are frequently employed prior to analysis. Liquid-liquid extraction, e.g., has been widely applied. It is, however, too time-consuming for routine use on large numbers of samples. Similarly, a number of separation procedures based on ion exchange have been described. The lack of specificity of ion exchange resins, however, often complicates sample treatment. Extraction chromatography, in which an inert support is impregnated with an extractant solution to form a chromatographic resin, combines the specificity of extraction with the ease of operation of an ion exchange column, thereby overcoming the principal drawbacks of those two methods. Previous work in this laboratory on the design of selective extractants for use in nuclear fuel reprocessing and in nuclear waste treatment has led to the development of several new phosphorus based neutral organic extractants. In this report the authors examine the use of two of these materials as stationary phases in extraction chromatography for the isolation of uranium from environmental samples: dipentyl pentylphosphonate and octyl(phenyl)N,N-diisobutylcarbamoylmethylphosphine oxide.

• OSTI ID: 7115595
• Report Number(s): CONF-911107--
• Conference Information: Journal Name: Transactions of the American Nuclear Society; (United States) Journal Volume: 64
• Country of Publication: United States
• Language: English

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
ACTINIDE COMPOUNDS
BUTYL PHOSPHATES
CHROMATOGRAPHY
ELEMENTS
ELUTRIATION
ENVIRONMENTAL EFFECTS
ENVIRONMENTAL MATERIALS
ESTERS
EXTRACTION CHROMATOGRAPHY
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MATERIALS
METALS
NITRIC ACID
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHOSPHORIC ACID ESTERS
POLYMERS
RARE EARTHS
RESINS
SEPARATION PROCESSES
TBP
URANIUM COMPOUNDS
WATER