Mineral Water (YS-50)
Analysis of  mineral water was performed using IC 
YS-50 (a column for cation chromatography). 
It turns out that many divalent cations is contained in mineral water.

Sample : 
Mineral water (
Water), 10micro-L
1. 
Na+
2. 
NH4+
3. 
K+
4. 
Ca2+
5. 
Mg2+
Column       : Shodex IC YS-50 (4.6mmID*125mm) 
Eluent       : 4mM Methanesulfonic acid aq.
Flow rate    : 1.0mL/min
Detector     : Non-suppressed conductivity
Column temp. : 40deg-C