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

(Standard solution A)
  1. 1.Monoethanolamine 10 mg/L
  2. 2.Diethanolamine 10 mg/L
  3. 3.Triethanolamine 10 mg/L

(Standard solution B)
  1. 4.NH4+ 5 mg/L
  2. 5.Methylamine 5 mg/L
  3. 6.Dimethylamine 5 mg/L
  4. 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 conductivity
Column temp.
25 ℃

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