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Selective separation of uranium from other elements by cation-exchange chromatography in hydrobromic acid and hydrochloric acid-acetone mixtures

Journal Article · · Talanta, v. 20, no. 11, pp. 1127-1137
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U(VI) can be separated from Ga, Fe(III), Bi, Pb, Cd, Zn, Cu(II), and Au(III) by quantitative elution with 0.50 M HBr in 86% acetone or with 0.35 M HBr in 90% acetone from a column of AG50W-X4 cation-exchange resin of 200 to 400 mesh particle size. U(VI) and many other ions are retained. U(VI) then can be eluted selectively with 0.50 M HCl in 83% acetone or with 0.35 M HCl in 85% acetone. Co(II), Mn(II), Mg, Ca, Ti(IV), Al, Zr, Th, and La are quantitatively retained by the column. These elements then can be eluted with 5 M HlNO/sub 3/. At the higher acid concentration (0.50M) the separation between U(VI) and Li is not satisfactory but is excellent at the lower acid concentration; the U(VI) peak is sharper at the higher acid concentration. Separations are sharp and quantitative, as is demonstrated by results for some synthetic mixtures. Distribution coefficients and elution curves are presented. (auth)

Research Organization:
National Chemical Research Lab., Pretoria
NSA Number:
NSA-29-023980
OSTI ID:
4338910
Journal Information:
Talanta, v. 20, no. 11, pp. 1127-1137, Journal Name: Talanta, v. 20, no. 11, pp. 1127-1137; ISSN TLNTA
Country of Publication:
United Kingdom
Language:
English

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Related Subjects

*ALUMINIUM-- ION EXCHANGE CHROMATOGRAPHY
*BISMUTH-- ION EXCHANGE CHROMATOGRAPHY
*CADMIUM-- ION EXCHANGE CHROMATOGRAPHY
*CALCIUM-- ION EXCHANGE CHROMATOGRAPHY
*COBALT-- ION EXCHANGE CHROMATOGRAPHY
*COPPER-- ION EXCHANGE CHROMATOGRAPHY
*GALLIUM-- ION EXCHANGE CHROMATOGRAPHY
*GOLD-- ION EXCHANGE CHROMATOGRAPHY
*IRON-- ION EXCHANGE CHROMATOGRAPHY
*LANTHANUM-- ION EXCHANGE CHROMATOGRAPHY
*LEAD-- ION EXCHANGE CHROMATOGRAPHY
*MAGNESIUM-- ION EXCHANGE CHROMATOGRAPHY
*MANGANESE-- ION EXCHANGE CHROMATOGRAPHY
*THORIUM-- ION EXCHANGE CHROMATOGRAPHY
*TITANIUM-- ION EXCHANGE CHROMATOGRAPHY
*URANIUM-- ION EXCHANGE CHROMATOGRAPHY
*ZINC-- ION
N40140* --Chemistry--Separation Procedures