SOLVENT EFFECTS ON THE ELECTRONIC ABSORPTION SPECTRA OF SOME ANALYTICAL INDICATORS

Electronic absorption spectra of selected ligands (Alloxan, Carmine, Naphthol Yellow S, Hematoxylin and Cyanine) were recorded in presence of different solvents (H2O, Ethyl acetate, Ethanol, DMF, Isopropyl alcohol, Amyl alcohol and Butanol) of variable physical properties. The electronic transitions were assigned. The data are analyzed based on the multiple linear regression technique explained from the views of different solvent parameters. Statistical analyses of the effect of solvents on the electronic spectra of the present ligands have been investigated