A New Method for the Determination of Very Small Amount of Antimony in Various Kinds of Metals

The determinations of very small amount of antimony in various kinds of metals were carried out by applying the method reported previously by the present authors, in which precipitates of antimony with methylviolet in hydrochloric acid solutions were extracted by amylacetate and then determined by the photometric method. Antimony in copper, lead, zinc, cadmium, bismuth, nickel and iron was separated out by one or double treatment, by which it was co-precipitated with permanganic acid in acidic solutions. Antimony in tin was liberated first by the reduction with iron, and then separated from iron by the above method