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H. Schmidt F. Neumann H. Freytag W. Schmieden 《Analytical and bioanalytical chemistry》1954,141(1):73-77
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The distribution of 8-hydroxyquinoline and scandium oxinate between water and benzene as a function of the pH of the aqueous phase has been studied. The distribution coefficient and the dissociation constants of the oxine are calculated from its distribution curve.Scandium oxinate is quantitatively extractable in the pu range 9.7 – 10.5 if at least 20 molecules of oxine per 1 atom scandium are used. In the presence of smaller quantities of oxine hydrolysis of tile scandium oxinate occurs on shaking. Directions arc given for the photometric determination of small quantities of scandium. 相似文献
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