Abstract
The retention behaviour of Fe(III), Cu, Pb, Zn, Ni, Co, and Mn in ion interaction chromatography was investigated to optimise metal ion separation and detection in water samples. A solution of an alkanesulfonate, the ion interaction reagent (IIR), tartaric acid, and acetonitrile (or methanol) was used as eluent. Retention times were found to be accelerated by increasing the following: organic modifier concentration, tartaric acid concentration, and the pH of the eluent solution. In contrast, increasing the length of the IIR carbon chain was found effective in enhancing the retention times of metal ions. An analytical method for the determination of metals at the μg/1 level was developed and applied to the analysis of natural water samples.
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