2001•Journal of Advanced ScienceOpen access

Gas-phase biosensor for aldehyde chemicals.

Hidenori Watanabe, Kohji Mitsubayashi

Abstract

Most of aldehyde chemicals such as acetaldehyde, formaldehyde, etc. are defined as Specified Malodor Chemical Substances by the Environment Agency in Japan. In this research, a gas-phase biosensor for aldehyde chemicals was constructed by incorporating an aldehyde dehydrogenase (ALDH) immobilized electrode into a flow reaction cell. The sensor was used to measure acetaldehyde (0.525-20ppm) and formaldehyde (50-2000ppb) in the gas-phase with high selectivity for aldehyde vapor in the presence of other gas-phase chemicals and gave a negligible response to these chemicals.

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Key concepts: Acetaldehyde, Aldehyde, Aldehyde dehydrogenase, Formaldehyde, Formaldehyde dehydrogenase, Chemistry, Biosensor, Organic chemistry