Elsevier

Infrared Physics

Volume 25, Issues 1–2, February 1985, Pages 319-321
Infrared Physics

Detection of gases produced by biological systems with an enzyme-photoacoustic sensor

https://doi.org/10.1016/0020-0891(85)90098-3Get rights and content

Abstract

A biosensor, based on the photoacoustic detection of gases produced by an enzyme system, has been developed. The photoacoustic gas cell is separated from the liquid by a gas-permeable membrane which provides good acoustical decoupling. Thus using urease immobilized on glass beads the CO2 formed was measured in the substrate concentration range of 10–100mM urea. Further development of the described device should enable this sensitivity to be improved by one to two orders of magnitude.

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There are more references available in the full text version of this article.

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