Sample | 100 µL of 24% sulfuric acid neutralized in the Dionex CDRS 600 |
Concentrator Column | Low Pressure Trace Cation Concentrator (i.e. Dionex IonPac 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 Dynamically Regenerated Suppressor, Dionex CDRS 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) |
| Spiking Standard Conc. (µg/L) | 24% H2SO4 Unspiked Value1) Conc. (µg/L) | Expected Spiked Value Conc. (µg/L) | 24% H2SO4 Spiked Value1) Conc. (µg/L) |
|---|---|---|---|---|
Lithium | 2.0 | ND2) | 2.0 | 1.993 ± 0.008 |
Sodium | 8.0 | 7.4 ± 0.4 | 15.4 | 14.3 ± 0.1 |
Ammonium | B3) | B | B | B |
Dimethylamine | B | B | B | B |
Potassium | 20.0 | 3.3 ± 0.5 | 23.3 | 22.5 ± 0.2 |
Trimethylamine | B | B | B | B |
Magnesium | 10.0 | 2.0 ± 0.2 | 12.0 | 12.2 ± 0.2 |
Calcium | 20.0 | 10.6 ± 0.1 | 30.6 | 33 ± 1 |