Reagentienlose Biosensorsysteme zur Formaldehydbestimmung

Biosensor system for quantitative determination of formaldehyde comprising the enzyme formaldehyde transmutase either immobilised on the pH sensitive surface of a pH value- measuring electrochemical transducer, or immobilised on spherical particles in a reactor with a subsequently connected pH measuring electrochemical transducer. USE - The sensor allows quantitative determination of formaldehyde which is widely used as an industrial raw material e.g. in the production of resins, plastics, dyes, adhesives and binders and also as a disinfectant and preservative. Due to the adverse effect of formaldehyde vapour on the health, it is important to have a reliable method of quantitative determination. ADVANTAGE - The device has good sensitivity and selectivity to formaldehyde and allows quick, simple and accurate determination of formaldehyde without using added reagents.