Summary
Gas biosensors for detection of vapors of some volatile compounds (SO2, alcohol, formaldehyde, phenol) are reviewed. The enzymes sulphite oxidase, alcohol oxidase, alcohol dehydrogenase, formaldehyde dehydrogenase and polyphenol oxidase are used in electrochemical cells separated from the gas phase by a porous membrane, and in microbiosensors with “enzyme gel” deposited onto an interdigitated gold two-electrode system. A gas biosensor for the vapors of phenolic compounds vapors, comprising an enzyme/gas-diffusion electrode with tyrosinase enzyme is investigated. The transient amperometric signal and the calibration curves of this gas biosensor are studied in the presence of phenol, p-cresol and 4-chlorophenol vapors. It is shown that phenol vapor concentrations in the ppb range are detectable with this type of gas biosensor.
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© 1997 Birkhäuser Verlag Basel/Switzerland
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Iliev, I., Kaisheva, A. (1997). Electrochemical gas biosensors. In: Scheller, F.W., Schubert, F., Fedrowitz, J. (eds) Frontiers in Biosensorics II. EXS, vol 81. Birkhäuser Basel. https://doi.org/10.1007/978-3-0348-9045-8_6
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DOI: https://doi.org/10.1007/978-3-0348-9045-8_6
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