Ion-selective electrode

An ion-selective electrode (ISE), also known as a specific ion electrode (SIE), is a simple membrane-based potentiometric device which measures the activity of ions in solution.^[1] It is a transducer (or sensor) that converts the change in the concentration of a specific ion dissolved in a solution into an electrical potential. The voltage is theoretically dependent on the logarithm of the ionic activity, according to the Nernst equation. Ion-selective electrodes are used in analytical chemistry and biochemical/biophysical research, where measurements of ionic concentration in an aqueous solution are required.^[2]

^ Meyerhoff, M. E.; Opdycke, W. N. (1986-01-01), Spiegel, Herbert E. (ed.), "Ion-Selective Electrodes", Advances in Clinical Chemistry, vol. 25, Elsevier, pp. 1–47, retrieved 2024-10-06
^ A. J. Bard and L. Faulkner (2000). Electrochemical Methods: Fundamentals and Applications. New York: Wiley. ISBN 978-0-471-04372-0.

[1] Meyerhoff, M. E.; Opdycke, W. N. (1986-01-01), Spiegel, Herbert E. (ed.), "Ion-Selective Electrodes", Advances in Clinical Chemistry, vol. 25, Elsevier, pp. 1–47, retrieved 2024-10-06

[2] A. J. Bard and L. Faulkner (2000). Electrochemical Methods: Fundamentals and Applications. New York: Wiley. ISBN 978-0-471-04372-0.

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