Product Manual for IonPac CS16
Page 28 of 65
5.5.1.
6-Cation Run (Li
+
, Na
+
, NH
4
+
, K
+
, Mg
2+
, Ca
2+
) at Room Temperature Operation Continuation
To minimize potential peak overlap between magnesium and potassium with changes in lab temperature, it is better to use a
38 mM methanesulfonic acid eluent, as shown below at 22 °C and 29 °C lab temperature.
Column:
IonPac CS16 3-mm Analytical Column with guard
Sample Volume:
25 µL Loop
Eluent:
38 mM Methanesulfonic acid
Eluent Flow Rate:
0.36 mL/min
Temperature: See
chromatogram
SRS Suppressor:
Cation Self-Regenerating Suppressor 300 (2-mm) in
AutoSuppression Recycle Mode
or MMS Suppressor:
Cation MicroMembrane Suppressor, CMMS 300 (4-mm)
MMS Regenerant:
TBAOH
MMS Mode:
Displacement Chemical Regeneration (DCR)
Expected Background Conductivity:
< 2 µS
Storage Solution:
Eluent
Eluent: 38 mM Methanesulfonic acid (MSA), 22 °C
0
5
10
15
20
-0.26
2.96
6.18
9.40
1
2
3
4
5
6
Analyte
mg/L
1. Lithium
0.5
2. Sodium
2.0
3. Ammonium
2.5
4. Magnesium
2.5
5. Potassium
5.0
6. Calcium
5.0
where 1 mg/L = 1 ppm
µS
Minutes
Eluent: 38 mM Methanesulfonic acid (MSA), 29 °C
0
5
10
15
20
-0.26
2.96
6.18
9.40
1
2
3
4
5
6
µS
Minutes
Figure 13
IonPac CS16 3-mm 6-Cation Run Optimized for Room Temperature Operation
Document No. 031747-05
© 2010 Dionex Corporation
December 2010
