Separation of Metal Ions by Reversed-Phase High Performance Liquid Chromatography UsingIn-SituComplexation. Application to Determination of Fe(III) and Fe(II) as O-Phenanthroline Complexes

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Abstract
The separation of different mixtures of the metal ions Fe(III), Fe(II), Ni(II), Co(II), Cu(II), Zn(II), Cd(II), Hg(II), Ca(II), Mg(II), Al(III), Cr(III), Sn(II), and Sn(IV) has been performed by using reversed-phase high performance liquid chromatography and o-phenanthroline in mobile phase. Among others, the separation of Fe(III) and Fe(II) has been achieved and detection limits for these species are given. The detection limit for Fe(II) at 509 nm is 240 times minor than at 340 nm. This last wavelength allows the simultaneous detection of both cations.