Summary
A biosensor system for continuous on-line monitoring of hydrogen peroxide concentration was developed employing catalase and a poly(vinyl alcohol)/poly(tetra fluoro ethylene) bilayer membrane system, Catalase was entrapped between poly(vinyl alcohol) membrane layer and poly(tetra fluoro ethylene) membrane layer outside of the galvanic type DO probe. Since poly(vinyl alcohol) membrane has non-porous, hydrophilic characteristics, the difference in hydrogen peroxide concentration between inside and outside of the membrane was therefore approximately 100 times. The developed hydrogen peroxide sensor has a wide linear range of hydrogen peroxide sensing more than 140 mM and favourable dynamic response characteristics. The sensor showed also good operational stability, rapid response time, and long life time.
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Joo, H., Yoo, Y.J. Biosensor for the monitoring of hydrogen peroxide using poly(vinyl alcohol) membrane system. Biotechnol Tech 5, 453–458 (1991). https://doi.org/10.1007/BF00155492
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DOI: https://doi.org/10.1007/BF00155492