The determination of aluminium with 8-hydroxyquinoline. Part I. Precipitation in acetate-buffered solution

Abstract

The conditions for an accurate gravimetric or titrimetric determination of aluminium with 8-hydroxyquinoline in acetate-buffered solution have been established. Precipitation is carried out at a pH higher than 5·2 with an excess of 200 to 300 mg of 8-hydroxyquinoline above the stoicheiometric amount in a final volume of 150 to 200 ml, and the precipitate washed with a neutral 0·02 per cent. solution of 8-hydroxyquinoline.

In pure solutions a standard deviation of about 0·01 mg of aluminium has been obtained.