Monovalent and Divalent Cation Standards (7) (Eluent Conteinig Acetonitrile)

IC YS-50 can use the eluent adding acetonitrile (up to 50%). Adding acetonitrile can weaken hydrophobic interaction, and therefore quicken the elution of highly hydrophobic cations.
Note: Not every organic solvent can be used. (Methanol is unusable.)

Sample : 10micro-L
1. Li⁺ 2mg/L
2. Na⁺ 10mg/L
3. NH₄⁺ 10mg/L
4. K⁺ 20mg/L
5. Mg²⁺ 10mg/L
6. Ca²⁺ 20mg/L

Column       : Shodex IC YS-50 (4.6mmID*125mm) 
Flow rate    : 1.0mL/min
Detector     : Non-suppressed conductivity
Column temp. : 40deg-C