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ASM Handbook

Materials Characterization

Edited by
Ruth E. Whan
Ruth E. Whan
Sandia National Laboratories
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ASM International
Volume
10
ISBN electronic:
978-1-62708-178-8
Publication date:
1986
Book Chapter

Potentiometric Membrane Electrodes

By
Mark A. Arnold
Mark A. Arnold
Department of Chemistry, University of Iowa
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Published:
1986
Page range:
181 - 187

Abstract

Potentiometric membrane electrodes are electrochemical devices that can be used to quantify numerous ionic and nonionic species. This class of electrochemical sensors can be divided into ion-selective and gas-sensing membrane electrodes. The first half of this article mainly focuses on the subclasses, the membrane potential, electrode selectivity limitations and the methods of analysis of the ion-selective membrane electrodes. These methods of analysis include the use of calibration curves, addition techniques, subtraction techniques, and titration. The second half outlines gas sensing membrane electrodes, and discusses important elements that must be considered in addition to the potentiometric membrane electrode to ensure proper electrode response. These elements are reference electrodes, temperature controls, recording of the potential with respect to time, electrode storages, and sample pretreatment. The article also explains the applications of the potentiometric membrane electrodes with the aid of an example.

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Mark A. Arnold, 1986. "Potentiometric Membrane Electrodes", Materials Characterization, Ruth E. Whan

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