Abstract
An ion chromatography system using chelating dye-coated columns for the determination of trace metals in high ionic strength media has been developed. A post-column spectrophotometric detection systems was employed to investigate transition and alkaline earth metals. Initial investigations involved a study of the effect of eluent pH, with various metal ions, on different dyes and substrates. Later work concentrated on separation of metal ions using dye-coated high-performance substrates, and a comparison was made with a commercial chelating column. A number of metal ion separations in 1 mol dm–3 potassium nitrate have been achieved under isocratic and gradient conditions.
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