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Related Experiment Videos

Monoliths for microfluidic devices in proteomics.

Séverine Le Gac1, Julien Carlier, Jean-Christophe Camart

  • 1Laboratoire de Chimie Organique et Macromoléculaire, Université des Sciences et Technologies de Lille (Lille 1), UMR CNRS 8009, Chimie Organique et Macromoléculaire, 59655 Villeneuve d'Ascq Cedex, France.

Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
|July 9, 2004
PubMed
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Researchers developed new polymer-based monolithic columns for on-chip peptide separation and desalting. These columns, suitable for nanoLC-MS, show performance comparable to commercial proteomic columns.

Area of Science:

  • Analytical Chemistry
  • Materials Science
  • Separation Science

Background:

  • Integration of sample preparation and analysis is crucial for efficient workflows.
  • Monolithic columns offer advantages in flow resistance and surface area for chromatography.
  • Polymer-based materials provide versatile platforms for stationary phase development.

Purpose of the Study:

  • To prepare and characterize monolithic capillary columns for on-chip sample preparation.
  • To evaluate the performance of these columns for peptide separation and desalting using nanoLC-MS.
  • To integrate these monolithic phases into microchannels for on-line analysis.

Main Methods:

  • Preparation of monolithic columns using lauryl methacrylate (LMA) and ethylene dimethacrylate (EDMA).

Related Experiment Videos

  • Stationary phase characterization with C12-functionality.
  • Testing in nanoLC-MS for separation of Cytochrome C digest fragments.
  • Polymerization of monolithic phases within SU-8 microchannels.

    • Main Results:

    • LMA-based monolithic capillary columns achieved separation efficiencies up to 145 x 10(3) plates/m.
    • Performance was comparable to standard commercial proteomic columns.
    • Monolithic phases polymerized in microchannels withstood high pressures (50 bar) but showed reduced separation efficiency compared to capillary format.

    Conclusions:

    • Monolithic LMA-based columns are effective for peptide separation and desalting in nanoLC-MS.
    • Successful integration into microchannels demonstrates potential for on-chip applications.
    • Further optimization of microchannel dimensions is needed to match capillary format separation performance.