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Polymeric membrane electrodes for drug analysis.

L Campanella1, M Tomassetti, F Mazzei

  • 1Department of Chemistry, University La Sapienza, Rome, Italy.

Journal of Pharmaceutical and Biomedical Analysis
|January 1, 1988
PubMed
Summary
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New polymeric membrane electrodes were developed for selective determination of cholate and benzylpenicillinate. These sensors offer a viable method for analyzing cholic acids, surfactants, and antibiotics.

Area of Science:

  • Electrochemistry
  • Polymer Science
  • Analytical Chemistry

Background:

  • Development of ion-selective electrodes (ISEs) is crucial for accurate chemical analysis.
  • Polyvinyl chloride (PVC) based membranes are widely used in ISEs.
  • Need for selective and sensitive electrodes for biologically and pharmaceutically relevant analytes.

Purpose of the Study:

  • To prepare and characterize two new polymeric membrane electrodes.
  • To achieve selectivity for cholate and benzylpenicillinate anions.
  • To apply these electrodes for the determination of cholic acids, anionic surfactants, and antibiotics.

Main Methods:

  • Fabrication of PVC-based membranes incorporating polybenzyl-propargilamine as a conductive polymer.
  • Incorporation of benzyldimethylcethylammonium-cholate or -benzylpenicillinate as ion exchangers.

Related Experiment Videos

  • Electrochemical measurements to assess electrode performance and selectivity.

    • Main Results:

    • Successful preparation of polymeric membrane electrodes selective to cholate and benzylpenicillinate.
    • Demonstrated applicability of the electrodes for the determination of cholic acids, anionic surfactants, and antibiotics.
    • Comparison of results with existing PVC and liquid membrane sensors.

    Conclusions:

    • The new polymeric membrane electrodes exhibit promising selectivity and applicability for target analytes.
    • These sensors provide an alternative to previously described PVC and liquid membrane sensors.
    • The developed electrodes contribute to advancements in electrochemical sensing technologies.