Product Manual for IonPac CS16
Page 40 of 65
5.15.
Isocratic Elution of the Six Common Cations Plus Manganese at 60 °C
Six common inorganic cations, ammonium plus manganese can be separated by isocratic elution at 60 °C. The CSRS 300 is
placed outside of the column oven. This separation can be achieved on a CS12A at room temperature using isocratic
conditions. The CS16 should be used where disparate concentration ratios of sodium and ammonium besides calcium,
magnesium and manganese are to be determined.
Column:
IonPac CS16 3-mm Analytical Column (no guard)
Sample Volume:
25 µL Loop
Eluent:
26 mM Methanesulfonic acid (MSA)
Eluent Source:
EG40
Eluent Flow Rate:
0.36 mL/min
Temperature: 60
°C
SRS Suppressor:
Cation Self-Regenerating Suppressor 300 (2-mm) in
AutoSuppression Recycle Mode (placed outside oven)
or MMS Suppressor:
Cation MicroMembrane Suppressor, CMMS 300 (2-mm)
MMS Regenerant:
TBAOH
MMS Mode:
Displacement Chemical Regeneration (DCR)
Expected Background Conductivity:
< 2 µS
Storage Solution:
Eluent
0
5
10
15
20
25
30
Minutes
0.1
2.3
4.5
µS
1
2
3
4
5
6
7
Analyte µg/L
1. Lithium
67
2. Sodium
267
3. Ammonium
330
4. Potassium
667
5. Magnesium
330
6. Manganese
167
7. Calcium
667
where 1 µg/L = 1 ppb
Figure 24
Isocratic Elution of the Six Common Cations plus Manganese at 60 °C
Document No. 031747-05
© 2010 Dionex Corporation
December 2010
