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Triple-Barrel Ultramicroelectrodes for Multipurpose, Submilliliter Electroanalysis.

ABSTRACT: Here, we have developed and applied a triple-barrel microelectrode. This device incorporates a platinum disk working electrode, a platinum disk counter electrode, and a low-leakage Ag/AgCl reference electrode into a small probe. We demonstrate that the incorporated low-leakage reference electrode shows similar voltammetry, potentiometry, and drift when compared to a commercial reference electrode in bulk solution. We also demonstrate the versatility of such a small three-channel system via voltammetry in nanoliter droplets and through electroanalysis of captured aerosols. Finally, we demonstrate the probe's potential utility in single-cell electroanalysis by making measurements within salmon eggs.

SUBMITTER: Kauffmann PJ

PROVIDER: S-EPMC10911394 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature

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Triple-Barrel Ultramicroelectrodes for Multipurpose, Submilliliter Electroanalysis.

Kauffmann Philip J PJ Walker Nicole L NL Gupta Vanshika V Dick Jeffrey E JE

Analytical chemistry 20230522 22

Here, we have developed and applied a triple-barrel microelectrode. This device incorporates a platinum disk working electrode, a platinum disk counter electrode, and a low-leakage Ag/AgCl reference electrode into a small probe. We demonstrate that the incorporated low-leakage reference electrode shows similar voltammetry, potentiometry, and drift when compared to a commercial reference electrode in bulk solution. We also demonstrate the versatility of such a small three-channel system via volta ...[more]

PMID: 37218147

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