Ethanolamines and Alkylamines (Phosphoric Acid + Acetonitorile)

Ethanolamines and alkylamines were analyzed using IC YK-421. Sharp peaks were obtained during the analysis of ethanolamines, but during the analysis of alkylamines, peaks with a little tailing were observed.


Sample : 50micro-L
1. Monoethanolamine 10mg/L
2. Diethanolamine 10mg/L
3. Triethanolamine 10mg/L
4. NH₄⁺ 5mg/L
5. Methylamine 5mg/L
7. Dimethylamine 5mg/L
8. Trimethylamine 20mg/L

Column       : Shodex IC YK-421 (4.6mmID*125mm)
Eluent       : 4mM H3PO4 aq./CH3CN=95/5
Flow rate    : 1.0mL/min
Detector     : Non-suppressed coductivity
Column temp. : 25deg-C