Eluant tartaric acid/pyridine-2,6-dicarboxylic

Fig. 4-30. Simultaneous separation of alkali metals, alkaline-earth metals, and ammonium on PBDMA-coated silica with a tartaric acid/pyridine-2,6-dicarboxylic acid eluant. — Separator column Metrosep Cation 1-2 eluant 5 mmol/L tartaric acid -t 0.75 mmol/L pyridine-2,6-dicarboxylic acid flow rate 1 mL/min detection direct conductivity injection volume 10 pL solute concentrations ...

Apart from the obligatory membrane filtration (0.45 pm), the only sample preparation in the analysis of rain water, ground water, and swimming pool water is a dilution with de-ionized water. Figure 9-9 shows a cation chromatogram of a rain water sample [42] that applies non-suppressed conductivity detection the sample was injected without any dilution because of its low electrolyte content. Metrosep Cation 1-2 served as the separator column and the eluant was a mixture of tartaric acid and pyridine-2,6-dicarboxylic acid. 

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