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Rasheed AS, Al-Phalahy BA, Seubert A. Studies on Behaviors of Interactions Between New Polymer-based ZIC-HILIC Stationary Phases and Carboxylic Acids. J Chromatogr Sci. 2016;55(1):52-59doi: 10.1093/chromsci/bmw149.
Rasheed, A. S., Al-Phalahy, B. A., & Seubert, A. (2017). Studies on Behaviors of Interactions Between New Polymer-based ZIC-HILIC Stationary Phases and Carboxylic Acids. Journal of chromatographic science, 55(1), 52-59. https://doi.org/10.1093/chromsci/bmw149
Rasheed, Ashraf Saad, et al. "Studies on Behaviors of Interactions Between New Polymer-based ZIC-HILIC Stationary Phases and Carboxylic Acids." Journal of chromatographic science vol. 55,1 (2017): 52-59. doi: https://doi.org/10.1093/chromsci/bmw149
Rasheed AS, Al-Phalahy BA, Seubert A. Studies on Behaviors of Interactions Between New Polymer-based ZIC-HILIC Stationary Phases and Carboxylic Acids. J Chromatogr Sci. 2017 Jan;55(1):52-59. doi: 10.1093/chromsci/bmw149. Epub 2016 Oct 07. PMID: 27993864.
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J Chromatogr Sci. 2017 Jan;55(1):52-59. doi: 10.1093/chromsci/bmw149. Epub 2016 Oct 07.

Studies on Behaviors of Interactions Between New Polymer-based ZIC-HILIC Stationary Phases and Carboxylic Acids.

Journal of chromatographic science

Ashraf Saad Rasheed, Bashaer Abbas Al-Phalahy, Andreas Seubert

Affiliations

  1. Department of Chemistry, College of Science, University of Baghdad, Al-Jadriya campus, 10071 Baghdad, Iraq [email protected].
  2. Department of Chemistry, College of Science, University of Al-Nahrain, Al-Jadriya campus, 10072 Baghdad, Iraq.
  3. Faculty of Chemistry, University of Marburg, Hans-Meerwein-Str. 4, 35043 Marburg, Germany.

PMID: 27993864 DOI: 10.1093/chromsci/bmw149

Abstract

Zwitterionic stationary phases with nearly identical capacities were prepared by graft polymerization of a series of sulfobetaine precursors onto the surface of porous PS/DVB particles. The different spacer lengths are used as an investigative tool for the retention behavior of carboxylic acids; namely malonic, succinic, glutaric and maleic acid. In zwitterionic ion chromatography-hydrophilic interaction liquid chromatography (ZIC-HILIC) separation mode, the retention characteristic of carboxylic acids was examined using sodium acetate/acetonitrile eluents and UV detection. The retention is based on partitioning in reversed as well as in HILIC mode and zwitterionic ion exchange resulting in a mixed separation mode for the carboxylic acids. This ion exchange behavior has never been observed before for sulfobetaine-based zwitterionic stationary phases.

© The Author 2016. Published by Oxford University Press. All rights reserved. For Permissions, please email: [email protected].

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