Ethanolamines and Alkylamines (YK-421) (Phosphoric Acid + Acetonitrile)

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 : 50 μL
1. Monoethanolamine 10 mg/L
2. Diethanolamine 10 mg/L
3. Triethanolamine 10 mg/L
4. NH4+ 5 mg/L
5. Methylamine 5 mg/L
6. Dimethylamine 5 mg/L
7. Trimethylamine 20 mg/L



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

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