Trialkylammoniums were separated using a cation chromatography column, IC YS-50 with charged aerosol detector (CAD). The column demonstrates low 'bleed' providing a stable baseline. The use of a low concentration of acetonitrile in the eluent will allow the tetraalkylammonium compounds to elute by hydrophobic interaction.

Sample: 5 µL

1. 1.Tetramethylammonium 25 µg/mL
2. 2.Tetraethylammonium 50 µg/mL
3. 3.Tetrapropylammonium 100 µg/mL
4. 4.Tetrabutylammonium 100 µg/mL
5. 5.Tetrapentylammonium 100 µg/mL
6. 6.Tetrahexylammonium 200 µg/mL