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Quinto M, Koudelka-Hep M, Palmisano F. Enzyme modified microband electrodes: cross-talk effects and their elimination. Analyst. 2001;126(7):1068-72doi: 10.1039/b101529j.
Quinto, M., Koudelka-Hep, M., & Palmisano, F. (2001). Enzyme modified microband electrodes: cross-talk effects and their elimination. The Analyst, 126(7), 1068-72. https://doi.org/10.1039/b101529j
Quinto, M, et al. "Enzyme modified microband electrodes: cross-talk effects and their elimination." The Analyst vol. 126,7 (2001): 1068-72. doi: https://doi.org/10.1039/b101529j
Quinto M, Koudelka-Hep M, Palmisano F. Enzyme modified microband electrodes: cross-talk effects and their elimination. Analyst. 2001 Jul;126(7):1068-72. doi: 10.1039/b101529j. PMID: 11478637.
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Analyst. 2001 Jul;126(7):1068-72. doi: 10.1039/b101529j.

Enzyme modified microband electrodes: cross-talk effects and their elimination.

The Analyst

M Quinto, M Koudelka-Hep, F Palmisano

Affiliations

  1. Dipartimento di Chimica, Università degli Studi di Bari, Italy. [email protected]

PMID: 11478637 DOI: 10.1039/b101529j

Abstract

One microband of an array of four microband electrodes (1 mm long and 25 microm wide with a 25 microm gap) was modified with glucose oxidase by direct electrochemically assisted immobilisation, giving a stable microbiosensor with an apparent Michaelis-Menten constant of 12 mM and an i(max) of 80 nA. Cross-talk effects on the adjacent microbands were studied and three different methods for their elimination were tested: the most efficient one involved catalase deposition on the adjacent microband. Under these conditions, the maximum response at the unmodified microbands was in the worst case about 3% compared with the response of the modified microband. This approach has the potential to fabricate a multianalyte microbiosensor.

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