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Separation of Tetrabutylammonium Separation of Quaternary Amines by Reverse-Phase Mechanism  Primesep B separates quaternary amines, such as t-butylamine with symmetrical peak shape by a combination of reversed-phase and ion-exclusion mechanisms. The embedded basic functional group on the stationary phase shields the underlying silanols to prevent peak tailing. Excellent peak shape results with a mass spec compatible mobile phase of water, acetonitrile (MeCN, ACN) and trifluoracetic acid (TFA) with evaporative light scattering detection (ELSD). Application Analytes: Tetrabutylammonium Application Detection: ELSD/MS Detection Separation of Sodium, Tetramethylammonium and Tetrabutylammonium on Primesep 200 Column
Hydrophilic and hydrophobic quaternary amines, along with sodium ion, were separated by mixed-mode chromatography on a Primesep 200 column. Mechanism of retention for sodium and tetramethylammonium ions is cation exchange, while the tetrabutylammonium ion is retained by combination of reversed-phase and cation-exchange mechanisms. All three compounds are not UV-active and monitoring is done by ELSD/CAD. Application Analytes: Sodium Tetrabutylammonium Tetramethylammonium Application Detection: ELSD/MS Detection |
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