1674-1676Solvent extraction behaviour of zinc(II),
cadmium(II), mercury(II) and bismuth(III) with n-octylaniline in different
organic solvents from various aqueous acid solutions has been
investigated.
A scheme for
the separation of these metals from each other is developed using dependence of
distribution ratio on aqueous to organic phase ratio, selective strippants and also
on different organic solvents as diluents. The nature of probable extracted
species has been established. The method has been applied to separate and
determine zinc and mercury from commercial pharmaceutical preparations. The proposed
method is simple, rapid and selective