Abstract
Hydrophilic interaction liquid chromatography is a separation technique suitable for the separation of moderately and highly polar compounds. Various stationary phases for HILIC are commercially available.
While the stationary phases based on the same type of ligand are available from different providers, they can display a distinct retention characteristics and separation selectivity. The current work is focused on characterization and comparison of the separation systems of two amide-based HPLC columns from two producers, i.e.
XBridge Amide column and TSK gel Amide-80 column. Several characterization procedures (tests) were used to investigate the differences between these columns.
The chromatographic behavior of selected analytes indicates that multimodal interactions are responsible for retention and separation on these columns. Multiple testing approaches were used in order to reveal subtle differences between the stationary phases.
Both amide-based columns showed certain differences in retention, selectivity, and plate counts. Based on the tests used in this study we conclude that investigated columns provide a different degree of H-bonding interactions.