Separator Metrosep Anion Dual

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 3.21 Separation of common inorganic anions on Metrosep Anion Dual 2. Eluent ...

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

Figure 10.105 shows the separation of common inorganic anions in a coohng water sample suppressed conductivity detection was used. A Metrosep Anion Dual 2 anion exchanger was selected as the stationary phase, with a carbonate/ bicarbonate mixture as an eluent The sample to be analyzed was diluted 1 10 with deionized water. 

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. 3-17. Separation of various inorganic anions on Metrosep Anion Dual 1. - Eluant 9 mmol/L phthalic acid - acetonitrile (98 2 v/v), pH 4.2 with Tris flow rate 0.5 mL/min detection direct conductivity injection volume 50 pL solute concentrations 5 mg/L each of fluoride (1). chloride (2), nitrite (3). bromide (4), nitrate (5). sulfate (6). iodide (7). thiosulfate (8), and thiocyanate (9).

Fig. 3-18. Separation of various inorganic anions on Metrosep Anion Dual 2. - Eluant 1.3 mmol/L Na2C03 + 2 mmol/L NaHC03 flow rate ...

Separator TSKMetrosep Anion Dual 1 Metrosep Anion Dual 2 Polyspher ICAN-1 Univeisal Anion MCISCA04... 

With the Metrosep Anion Dual 1 (see Fig. 3-17 in Section 3.4.1) and a phthalic acid eluant, such separation is achieved in about 20 minutes. 

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]).

---