Separator column Metrosep Anion Dual

Figure 10.17 Amperometric detection of nitrite at trace level. Separator column Metrosep Anion Dual 2 eluent 2mmol/L...

Figure 10.159 Isocratic elution of anions in a chromic acid plating bath. Separator column Metrosep Anion Dual 2 eluent 12 mmol/L Na2C03 -1-2 mmol/L NaHC03/acetone (82 18 v/v) flow rate 0.85 mL/min detection suppressed conductivity injection volume 5 pU...

Fig. 9-57. Anion analysis of cooling water. - Separator column Metrosep Anion Dual 2 eluant 1.3 mmol/L Na2C03 + 2 mmol/L NaHC03 flow rate 0.8 mL/min detection suppressed conductivity injection 20 pL sample (1 10 diluted) solute concentrations 0.08 mg/L fluoride (1), 75.3 mg/L chloride (2), 0.26 mg/L nitrite (3), 18.3 mg/L nitrate (4), 4.3 mg/L orthophosphate (5), and 31.7 mg/L sulfate (6) (taken from [108]).

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. 

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