Separator column Metrosep Cation

Figure 10.9 Cation analysis of a rain water sample. Separator column Metrosep Cation 1 -2 eluent 4 mmol/L tartaric acid +1 mmol/L pyridine-2,6-dicarboxylic acid flow rate 1 ml/ min detection nonsuppressed conductivity ...

Fig. 4-31. Simultaneous separation of alkali metals, alkaline-earth metals, and ammonium on PBDMA-coated silica with a pure tartaric acid eluant. - Separator column Metrosep Cation 1-2 eluant ...

Fig. 9-30. Separation of alkali metals, alkaline-earth metals and ammonium in a sewage sludge after nitric acid digest. - Separator column Metrosep Cation 1-2 eluant 4 mmol/L tartaric acid + 1 mmol/L pyridine-2,6-dicarboxylic acid flow rate 1 mL/min detection non-suppressed conductivity injection 10pL sample (1 25 diluted) solute concentrations 0.22 mg/L lithium (1), 26 mg/L sodium (2), 4.9 mg/L ammonium (3), 5.8 mg/L manganese (4), 210 mg/L potassium (5).

Figure 10.77 Anion and cation analysis of aerosol particles (PM 2.5) In an outside air sample, (a) Anion analysis - separator column Metrosep A Supp 5 column dimensions ...

Figure 10.224 Determination of alkali and 10 1 detection nonsuppressed conductivity alkaline-earth metals in a red wine. Separator sample Italian red wine diluted 1 50 with column Metrosep Cation 1-2 eluent 4mmol/L deionized water peaks 95mg/L sodium (1), tartaric acid -l-1 mmol/L pyridine-2.6-dicarboxylic 822mg/L potassium (2), 306mg/L caldum (3), acid flow rate 1 mL/min injection volume and 722 mg/L magnesium (see [333]).

Figure 10.335 Cation-exchange separation of the [ F]FCFI reaction mixture. Separator column Metrosep C4 coiumn dimensions 150mmx4mm i.d. coiumn temperature 40°C eiuent 1.7mmoi/L FIN03-F0.7mmoi/L...

Fig. 9-97. Separation of fluoride, chioride, and nitrate in a nickei/zinc plating bath. - Separator column Metrosep Anion Dual 2 eluant 1.5 mmol/L Na2C03 + 2 mmol/L NaHCOs flow rate 0.8 mL/min detection suppressed conductivity injection 20 pL sample (1 400 diluted) sample preparation treatment with a cation exchanger to remove metals solute concentrations 9.6 mg/L fluoride (1), 38.1 mg/L chloride (2), and 21.6 mg/L nitrate (3) in a matrix of50g/L nickel and 80g/L zinc as sulfate (4) (taken from [164]).

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. 

For the separation and quantification of the cations and anions, a Metrohm AG ion chromatograph (1C), was utilized. The ions analyzed were lithium (Li", sodium (Na" ), ammonium (NILj ), calcium (Ca " ), magnesium (Mg " ), potassium (K ), fluoride (F ), chloride (Cl ), nitrite (N02 ), nitrate (3 ), phosphate (P04 ) and sulphate (S04 ). The instmment was equipped with a 733 IC analytical separation systems, a 732 IC detector, 709 IC pump, 753 Suppressor module and a 750 Auto sampler. A Metrosep Anion Dual 2 column is used for anion detection with the suppressor module at a flow rate of 0.8 ml min while Metrosep C2-100 is used for the cation detection without the suppressor unit at a flow rate of 1.0 ml min Before doing the ion analysis, the IC was calibrated using a series of standard solutions of different concentrations containing the same ion. 

Figure 434 Separation of common inorganic detection nonsuppressed conductivity peaks cations on Metrosep C3. Column dimensions 1 mg/L lithium (1), 5mg/L sodium (2), 5mg/L...

Cation exchangers based on PBDMA-coated silica are offered by a number of companies. Metrohm (Herisau, Switzerland), for example, offers two columns under the trade names Metrosep Cl and C4. The 5 pm Metrosep Cl is considered to be the high-performance column for the simultaneous analysis of mono-and divalent cations with an analysis time of less than 20 min. It can also be used for the separation of various amines, which are typically eluted with a nitric acid eluent. Figure 4.41 shows an example chromatogram obtained under standard chromatographic conditions with an eluent mixture of tartaric acid and pyridine-2,6-dicarboxyiic acid (PDCA) (dipicohnic acid). Under these chromatographic conditions, calcium elutes ahead of magnesium, followed by strontium and barium. This unusual retention behavior can be attributed to the complex-ing properties of pyridine-2,6-dicarboxylic acid. With a pure tartaric acid eluent. 

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