Liquid-Liquid Extraction of Iron (III) Ions Using an (Azo) Derivative & it's Analytical Applications

Abstract

The study of solvent extraction of Iron(III) ion by an azo derivative of 8-hydroxyquinolin (DPDQ) had been made. The effect of various parameters on the extraction and distribution ratio such as acidity of medium; time of extraction; polarity of solvents; some anion and cation effected; redox agent effected; metal concentration effect; salting out &effect of temperature. The thermodynamic functions (ΔH, ΔG, ΔS) were calculated. The extraction   stoichiometry was studied using two methods Job's &Molar ratio. It was found to be (M: L) (1:3). The constant of stability of complex in method's mole ratio was calculated. The spectroscopy of UV-visible, F.T.I. R, HNMR, CNMR & mass were study for both the reagent & complex in organic phase. Other physical constants such as melting point & conductivity were studied.