Eluant pyridine-2,6-dicarboxylic acid

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 ...

Fig. 4 -50. Separation of transition metals on an ion exchanger with both anion and cation exchange capacity. -Separator column lonPac CSS eluant 6 mmol/L pyridine-2,6-dicarboxylic acid, pH 4.8 with LiOH flow rate 1 mL/min detection photometry at 520 nm after derivatization with PAR injection volume 50 pL solute concentrations 1 mg/L Fe (1), 1 mg/L Cu2 (2), 3 mg/L Ni (3), 4 mg/L Zn (4),...

Fig. 4-53. Simultaneous analysis of nine different transition metals. — Separator column lonPac CSS eluant 4 mmol/L pyridine-2,6-dicarboxylic acid +...

Fig. 7-34. Analysis of chromium (VI) in a flue gas scrubber solution. — Separator column lonPac CS5 eluant 2 mmol/L pyridine-2,6-dicarboxylic acid + 2 mmol/L Na2HP04 + 10 mmol/L Nal + 50 mmol/L NH4OAC flow rate 1 mL/min detection photometry at 520 nm after reaction with 1,5-DPC reagent composition 2 mmol/L 1,5-diphenylcarbazide + 0.5 mol/L H2SO4 — methanol (90 10 v/v) reagent flow rate 0.5 mL/min injection 50 pL sample (1 10 diluted).

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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