Analytical and Bioanalytical Chemistry

, Volume 396, Issue 1, pp 511–524

Bonded ionic liquid polymeric material for solid-phase microextraction GC analysis

  • Eranda Wanigasekara
  • Sirantha Perera
  • Jeffrey A. Crank
  • Leonard Sidisky
  • Robert Shirey
  • Alain Berthod
  • Daniel W. Armstrong
Original Paper

Abstract

Four new ionic liquids (IL) were prepared and bonded onto 5-µm silica particles for use as adsorbent in solid-phase microextraction (SPME). Two ILs contained styrene units that allowed for polymerization and higher carbon content of the bonded silica particles. Two polymeric ILs differing by their anion were used to prepare two SPME fibers that were used in both headspace and immersion extractions and compared to commercial fibers. In both sets of experiments, ethyl acetate was used as an internal standard to take into account adsorbent volume differences between the fibers. The polymeric IL fibers are very efficient in headspace SPME for short-chain alcohols. Immersion SPME also can be used with the IL fibers for short-chain alcohols as well as for polar and basic amines that can be extracted at pH 11 without damage to the IL-bonded silica particles. The sensitivities of the two IL fibers differing by the anion were similar. Their efficacy compares favorably to that of commercial fibers for polar analytes. The mechanical strength and durability of the polymeric IL fibers were excellent.

Figure

Chemistry of the polymerized ionic liquid absorbant and its morphology when bonded to the SPME fiber.

Keywords

Solid-phase microextraction Headspace Immersion Ionic liquid Bonded phase Beverages Gas chromatography 

Supplementary material

216_2009_3254_MOESM1_ESM.pdf (44 kb)
ESM1(PDF 44 kb)

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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Eranda Wanigasekara
    • 1
  • Sirantha Perera
    • 1
  • Jeffrey A. Crank
    • 1
  • Leonard Sidisky
    • 2
  • Robert Shirey
    • 2
  • Alain Berthod
    • 3
  • Daniel W. Armstrong
    • 1
  1. 1.Department of ChemistryUniversity of Texas at ArlingtonArlingtonUSA
  2. 2.SupelcoSigma-AldrichBellefonteUSA
  3. 3.CNRSUniversité de LyonVilleurbanneFrance

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