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Miniaturised gas chromatographic system with metal oxide gas sensor array for fast detection of off-flavors

: Bauersfeld, M.-L.; Bücking, M.; Bruckert, J.; Wöllenstein, J.


Institute of Electrical and Electronics Engineers -IEEE-:
16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS 2011 : 5-9 June 2011, Beijing
New York, NY: IEEE, 2011
ISBN: 978-1-4577-0157-3
ISBN: 978-1-4577-0156-6
International Solid-State Sensors, Actuators and Microsystems Conference <16, 2011, Beijing>
Fraunhofer IPM ()
Fraunhofer IME ()
gas sensor; chromatography; food industry; metal oxide; off-flavors; sensor array; thin film

A portable low-cost gas chromatographic measurement system with a micro machined gas sensor array as detector unit is presented. The system offers the separation and identification of volatile organic compounds and enables on-line monitoring of processes in food industry. This includes food quality, e.g. in fruit stores, slaughterhouse and for consumer protection. Further applications are the detection of off-flavors in meat from non-castrated male pigs and microbiological contaminations. Reliable and reproducible identification of aromatic compounds in the concentration range of a few ppb has been achieved.