Abstract
Hydrophilic interaction liquid chromatography (HILIC) based on polar stationary phases has vital research significance in the separation of polar compounds. Numerous HILIC stationary phases with different structures have been developed, which do not have universal properties and broad selectivity, making it a challenge to select the suitable column based on the properties of the samples. Consequently, it is particularly important to develop a bonded phase capable of separating a wide variety of samples, while having enhanced retention, improved selectivity, symmetric peak shape and good stability. Herein, a novel nitrogen-containing heterocyclic bonded phase with multiple functionalities, such as thioether, amino and hydroxyl groups (named AMTA) was employed as HILIC stationary phase. Detailed chromatographic evaluations were carried out, and the results showed that it was superior to other hydrophilic chromatographic columns in terms of selectivity, peak shapes and practical sample separation. Lastly, it has been verified that AMTA exhibited high orthogonality with the XBridge C18 column of reversed-phase liquid chromatography (RPLC) mode. In summary, we anticipate our assay to be instructive to other researchers in developing the HILIC stationary phase.
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