Anionic exchange separations of the elements that are extractable with tributyl phosphate. VII

Journal Article · Mon Jan 01 04:00:00 EST 1973 · Mikrochim. Acta, no. 6, pp. 865-875

OSTI ID:4410632

Korkisch, J; Koch, W

A method is described for the separation of uranium in which the latter is extracted from a 6 M hydrochloric acid solution by means of pure undiluted THP and adsorbed from a mixure of 30 vol.% THP, 60 vol.% methylglycol and 10 vol.% of 12 M hydrochloric acid on the strongly basic anion exchanger Dowex 1-X8 (chloride form). Since the THP-extract is used for the preparation of this mixture, the extraction and the ion-exchange may be combined, whereby not only the selectivity of the separation of the uranium is significantly raised but also there follows such a far-reaching enrichment of the uranium on the resin that even ppM quantities are readily determined. For this latter purpose, the resin is first treated with a mixture of 90 vol.% methylglycol and 10 vol.% 12 M hydrochloric acid to remove the THP, and then with 6 M hydrochloric acid to remove the co- adsorbed elements; and then the uranium is eluted by means of 1 M hydrochloric acid and determined fluorimetrically. For comparison purposes, 16 geologic specimens were analyzed in accord with this procedure and also employing another anion exchange method. The results show that the separation method descsibed here makes possible a quantitative separation of the uranium and leads to good reproducible results. (auth)

• Research Organization: Univ., Vienna
• NSA Number: NSA-29-009872
• OSTI ID: 4410632
• Journal Information: Mikrochim. Acta, no. 6, pp. 865-875, Journal Name: Mikrochim. Acta, no. 6, pp. 865-875; ISSN MIACA
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

*URANIUM-- ION EXCHANGE
GLYCOLS
HYDROCHLORIC ACID
MINERALS
N40140* --Chemistry--Separation Procedures
ORGANIC ION EXCHANGERS
SOILS
SOLUTIONS
TBP