Determination of iron, nickel, chromium and vanadium by means of redox and ion-exchange columns.
Redox and anion-exchange columns have been used to separate and determine iron, nickel, chromium and vanadium in solution. The anion-exchange columns provide some of the separations, and the redox columns are used for the determination of the iron, chromium and vanadium. The chromium and vanadium may be determined in the presence of the iron by adjustment of the acidity in the redox column. By using a column "memory" technique, titration of the actual metal solution has been avoided. The method shows some advantages over conventional methods.
Roberts
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Esso Research Centre, Abingdon, Berkshire, U.K.