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