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Metathesis polymerization-derived monolithic membranes for solid-phase extraction coupled with diffuse reflectance

Said Lubbad1, Steven A Steiner, James S Fritz

  • 1Institut für Analytische Chemie und Radiochemie, Universität Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria.

Journal of Chromatography. A
|December 20, 2005
PubMed
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Novel monolithic disks prepared using ring opening metathesis polymerization (ROMP) efficiently preconcentrate iodine and organic solutes from water. Solid-phase extraction (SPE) followed by diffuse-reflectance spectroscopy (DRS) enables quantitative analysis.

Area of Science:

  • Polymer Chemistry
  • Analytical Chemistry
  • Materials Science

Background:

  • Solid-phase extraction (SPE) is crucial for analyzing trace compounds in aqueous samples.
  • Developing novel, efficient sorbent materials is essential for improving SPE performance.
  • Ring opening metathesis polymerization (ROMP) offers a versatile route to synthesize functional polymers.

Purpose of the Study:

  • To synthesize novel monolithic disks for solid-phase extraction (SPE) applications.
  • To evaluate the preconcentration capabilities of these disks for iodine and organic solutes.
  • To establish a quantitative analytical method using diffuse-reflectance spectroscopy (DRS).

Main Methods:

  • Monolithic disks were synthesized via ring opening metathesis polymerization (ROMP) using norborn-2-ene (NBE) and specific crosslinkers.

Related Experiment Videos

  • Polymerization was conducted in bulk for thicker disks or on porous filters for thinner disks.
  • The disks were employed for solid-phase extraction (SPE) of iodine and organic solutes from aqueous solutions.

    • Main Results:

    • The synthesized monolithic disks demonstrated effective preconcentration of iodine and selected organic solutes.
    • Quantitative analysis of extracted solutes was successfully performed directly on the disk surface using diffuse-reflectance spectroscopy (DRS).
    • The method proved suitable for analyzing trace analytes in dilute aqueous samples.

    Conclusions:

    • Novel ROMP-based monolithic disks are effective sorbents for SPE.
    • The combination of SPE with in-situ DRS provides a viable method for quantitative trace analysis.
    • These materials hold promise for environmental monitoring and chemical analysis applications.