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Enhancing the anion separations on a polydivinylbenzene-based anion stationary phase

Authors
Journal
Journal of Chromatography A
0021-9673
Publisher
Elsevier
Publication Date
Volume
739
Identifiers
DOI: 10.1016/0021-9673(96)00155-0
Keywords
  • Stationary Phases
  • Lc
  • Mobile Phase Composition
  • Inorganic Anions
  • Polydivinylbenzene
Disciplines
  • Chemistry

Abstract

Abstract A new anion-exchange stationary phase is described for the separation of inorganic anions by ion chromatography. This stationary phase is made of polydivinylbenzene (P-DVB) based resin with dimetylethanolamine functional groups. The highly cross-linked P-DVB backbone makes this material chemically and mechanically stable under extreme chromatographic conditions. It withstands organic solvents and is stable at a wide range ofpH, temperature and pressure. The separation of anions on this stationary phase can be enhanced by simple modification of the chromatographic conditions. The resolution and peak shape can be improved by adding organic additives to the eluent. These improvements can also be achieved by changing the column operating temperature. This stationary phase is useful for the separation of inorganic anions by suppressor-based and single-column ion chromatography methods.

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