In order to determine the composition of metal chelates, the molar ratio of the reagent MPPSc with respect to metal ion was varied within 0.5:1, 1:1, 2:1, 3:1 and 4,1 v/v and procedure was followed as A. The absorbances were measured at their respective wavelengths of maximum absorbance against reagent blank, prepared separately, following the same procedure for each of the different composition, except abbition of metal ion was omitted. The graphs were plotted by recording the change in absorbances against
different ligand: metal ratios. It was observed that the absorbances of nickel and palladium reach maximum at ligand: metal ratio 2:1 and remain constant at higher reagent concentration.
In order to determine the composition of metal chelates, the molar ratio of the reagent MPPSc with respect to metal ion was varied within 0.5:1, 1:1, 2:1, 3:1 and 4,1 v/v and procedure was followed as A. The absorbances were measured at their respective wavelengths of maximum absorbance against reagent blank, prepared separately, following the same procedure for each of the different composition, except abbition of metal ion was omitted. The graphs were plotted by recording the change in absorbances againstdifferent ligand: metal ratios. It was observed that the absorbances of nickel and palladium reach maximum at ligand: metal ratio 2:1 and remain constant at higher reagent concentration.
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