Monovalent and Divalent Cation Standards (2)
Monovalent and divalent cation standards were analyzed using 
IC 
YK-421.

Sample : 10micro-L 
1. 
Li+ 1mg/L
2. 
Na+ 5mg/L
3. 
NH4+ 5mg/L
4. 
K+ 10mg/L
5. 
Rb+ 30mg/L
6. 
Cs+ 30mg/L
7. 
Ca2+ 10mg/L
8. 
Mg2+ 5mg/L
9. 
Sr2+ 10mg/L
10. 
Ba2+ 10mg/L
Column       : Shodex IC YK-421 (4.6mmID*125mm)
Eluent       : 5mM Tartaric acid + 1mM Dipicolinic acid + 1.5g/L Boric acid aq.
Flow rate    : 1.0mL/min
Detector     : Non-suppressed coductivity
Column temp. : 50deg-C