Reversed-phase thin-layer chromatography of some d-block metal ions on unconventional supports in complexing acid media

The reversed-phase thin layer chromatographic behavior of twenty d-block me tal ions has been studied on unconventional supports with complexing acid m edia as mobile phases. The effect on R-F values of addition of talc to othe r adsorbents was significant when oxalic and succinic acid media were used as mobile phases. Admixture of talc with starch proved very useful in effec ting a number of analytically important metal-ion separations. The mechanis m of migration is explained in terms of adsorption and complex Formation. T he effect of the pK of the acids used as mobile phases is discussed, as als o is the effect of the metal complexes formed on R-F values.