Abstract
This work deals with newly developed poly(styrene-divinylbenzene-methacrylic acid) monolithic columns for capillary electrochromatographic and capillary liquid chromatographic separations of low-molecular-weight organic compounds. The influence of the polymerization time on chromatographic properties of prepared monolithic capillary columns was studied by capillary electrochromatography and capillary liquid chromatography using a model mixture of thiourea, benzene, and its homologues. The effect of electrostatic interactions between methacrylic acid as a weak cation-exchanger and selected analytes (a mixture of three amino acids, and thiourea, or diethylamine) on their retention in capillary liquid chromatography was investigated. The determined run-to-run and batch-to-batch repeatabilities indicate high reliability of the preparation of the separation media.
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The authors gratefully acknowledge Charles University, Project SVV260560, for the financial support.
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Musilová, A., Vojta, J., Křížek, T. et al. Capillary monolithic columns based on poly(styrene-divinylbenzene-methacrylic acid) copolymer for liquid chromatography and electrochromatography. Monatsh Chem 153, 759–765 (2022). https://doi.org/10.1007/s00706-022-02944-6
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DOI: https://doi.org/10.1007/s00706-022-02944-6