Effect of Crown Ethers (YS-50)

Monovalent and divalent cations were analyzed using IC YS-50. 18-Crown 6- Ether will make a complex with cations, whose complex building depends on the kind of cations. Therefore, adding 18-Crown-6-Ether is able to control the elusion of cations and improve the separation of Na+ and NH4+.

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) 
Eluent       : 4mM Methanesulfonic acid + nmM 18-Crown 6-ether aq.
Flow rate    : 1.0mL/min
Detector     : Non-suppressed conductivity
Column temp. : 40deg-C