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Journal of Analytical Chemistry (Translated from Zhurnal Analiticheskoi Khimii), Vol. 51, No. 9, p.887-891 (1996)
ABSTRACT. The chromatographic behavior of alkali and alkaline-earth metals on a column packed with iminodiacetic acid-bonded silica is studied. The influence of concentrations of mineral and organic acids on retention is investigated. The optimum composition of the mobile phase for the simultaneous separation of alkali and alkaline-earth metals (0.00125 mol/L of perchloric acid and 0.00206 mol/L of 2,6-pyridinedicarboxylic acid) is selected. The limits of detection for indirect conductometric detection are from 1 to 7 mg/L. The procedure developed is applied to the analysis of several real water samples.