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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Microchimica acta 64 (1975), S. 569-579 
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary A method is described for the separation ofμg-amounts of copper from large amounts of uranium and of making the end-determination accessible by means of atomic absorption spectrophotometry. The separation of the copper from uranium and from other foreign ions present in the uranium matrix is brought about through adsorption of the copper on a column of the strongly basic anionexchanger Dowex 1, X8 from a mixture that consists of 90 vol.% methanol and 10 vol.% hydrobromic acid. After the adsorbed copper is eluted by means of 3M hydrochloric acid the copper is determined by the atomic-absorption-spectrophotometric procedure. The method was applied for the determination of copper in standard specimens of U3O8 (1 to 11 p. p. m. Cu) and Yellow Cake (4 to 25 p. p. m. Cu).
    Notes: Zusammenfassung Eine Methode wurde beschrieben, um μg-Mengen Kupfer von großen Mengen Uran zu trennen und der Endbestimmung mittels Atomabsorptionsspektrophotometrie zugänglich zu machen. Die Abtrennung des Kupfers von Uran und anderen in der Uranmatrix anwesenden Fremdionen erfolgt durch Adsorption des Kupfers auf einer Säule des stark basischen Anionenaustauschers Dowex 1, X8 aus einer Mischung bestehend aus 90 Vol.% Methanol und 10 Vol.% 1,5-m Bromwasserstoffsäure. Nach Elution des adsorbierten Kupfers mittels 3-m Salzsäure wird dieses atomabsorptionsspektrophotometrisch bestimmt. Die Methode wurde zur Bestimmung von Kupfer in U3O8-Standardproben (l bis 11 p. p. m. Cu) und Yellow-Cake-Proben (4 bis 25 p. p. m. Cu) herangezogen.
    Type of Medium: Electronic Resource
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