Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Low impedance coaxial K+ selective microelectrodes.

E Ujec, O Keller, J Machek

    Pflugers Archiv : European Journal of Physiology
    |November 1, 1979
    PubMed
    Summary

    This study details a new method for creating potassium-selective (K+) microelectrodes with reduced electrical resistance. This innovation significantly enhances measurement accuracy for rapid potassium concentration changes.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Breaking barriers in electrodeposition: Novel eco-friendly approach based on utilization of deep eutectic solvents.

    Advances in colloid and interface science·2024
    Same author

    [Antithyroid agents related agranulocytosis: Literature review].

    La Revue de medecine interne·2016
    Same author

    [Experimentation of an e-platform to detect situations at risk of cardiac impairment (platform E-care) in an internal medicine unit].

    La Revue de medecine interne·2016
    Same author

    The role of VEGF in the diabetic patients undergoing endovascular therapy of symptomatic aortic valve stenosis.

    Physiological research·2014
    Same author

    Medication adherence and resistant hypertension.

    Journal of human hypertension·2014
    Same author

    Multispecies biofilm in an artificial wound bed--A novel model for in vitro assessment of solid antimicrobial dressings.

    Journal of microbiological methods·2014

    Area of Science:

    • Electrochemistry
    • Analytical Chemistry
    • Biomedical Engineering

    Background:

    • Accurate measurement of potassium ion (K+) concentrations is crucial in various biological and chemical applications.
    • Traditional K+ selective microelectrodes often suffer from high electrical resistance, limiting their performance.
    • High resistance leads to increased noise and reduced resolving power, hindering the detection of rapid changes.

    Purpose of the Study:

    • To describe a novel procedure for preparing coaxial K+ selective microelectrodes.
    • To achieve significantly low longitudinal resistance (Re) in the liquid ion exchanger barrel.
    • To improve the signal-to-noise ratio and resolving power for K+ measurements.

    Main Methods:

    • Development of a coaxial microelectrode design.
    • Insertion of a secondary microelectrode filled with 0.5 mol/L KCl into the primary ion-exchanger column (Corning 477317).
    • Characterization of electrode resistance and performance.

    Main Results:

    • Successfully prepared coaxial K+ selective microelectrodes with substantially reduced longitudinal resistance.
    • Demonstrated a five-fold increase in resolving power compared to conventional designs.
    • Observed a significant decrease in the noise level of the measurements.

    Conclusions:

    • The described coaxial microelectrode preparation method effectively lowers electrical resistance.
    • This technical advancement enables more precise measurement of small and rapid changes in K+ concentrations.
    • The improved microelectrodes offer enhanced capabilities for real-time physiological monitoring and electrochemical analysis.

    Related Experiment Videos