4
– Example Applications
Thermo Scientific
Product Manual for the ERS 500 Suppressor
Page 59 of 84
031956-11
For Research Use Only. Not for Use in Diagnostic Procedures.
4.7.5
Dionex IonPac CS12A Analysis of 22% Phosphoric Acid
Sample:
100 µL of 22% phosphoric acid neutralized in the Dionex CERS 500
Concentrator Column:
Low Pressure Trace Cation Concentrator (i.e. Dionex TCC-XLP1, Item # 063889)
Guard Column:
Dionex IonPac CG12A Guard Column
Analytical Column:
Dionex IonPac CS12A Analytical Column
Eluent:
20 mM Methanesulfonic acid (MSA)
Eluent Flow Rate:
1.0 mL/min
Electrolytic Suppressor:
Dionex Cation Electrolytically Regenerated Suppressor, Dionex CERS 500
Recycled Eluent Mode
or Chemical Suppressor:
Dionex Cation Chemically Regenerated Suppressor, Dionex CCRS 500
Chemical Regenerant:
100 mN TBAOH
Expected Background Conductivity:
20 mM MSA: <1 µS
Expected System Operating Back Pressure:
Without Guard: 1,400 psi (9.65 MPa)
With Guard: 1,850 psi (12.75 MPa)
Analyte
Conc..
(µg/L)
1. Sodium
509.1
2. Ammonium
438.6
3. Dimethylamine
B
4. Potassium
25.8
5. Trimethylamine
B
6. Magnesium
22.4
7. Calcium
144.1
Figure 13 Dionex IonPac CS12A Analysis of 22% Phosphoric Acid
