Extraction chromatography of aluminium (III) and mutual separation of aluminium (III), gallium (III), indium (III) and thallium (III) with N-n-octylaniline.

A selective method has been developed for the extraction chromatography of aluminium (III) and its separation from several metal ions with a chromatographic column containing N-n-octylaniline (a liquid anion exchanger) coated on silanized silica gel as a stationary phase. The aluminium (III) was quantitatively extracted with the 0.065 mol/L N-n-octylaniline in 0.