P2.6.2 A Solid Electrolyte Sensor for Trace Gas Analysis
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- P2.6 Electrochemical-based Sensors
- M. Schelter, J. Zosel, W. Oelßner - Meinsberg Kurt-Schwabe Research Institute (Germany), U. Guth, M. Mertig - Technische Universität Dresden, Department of Physical Chemistry (Germany)
- 1591 - 1594
The determination of traces of volatile substances in gas mixtures is a highly informative analytical tool. It is used not only in non-invasive health evaluation like human breath gas analysis but also for monitoring the quality of air as well as for safety and security aspects of several technical processes. Today, commercially available measuring systems show sufficient detection limits, however, they use expensive and stationary mass spectrometers. Here we present a cost-efficient and mobile measuring system for the determination of traces of volatile substances in gas mixtures. A solid electrolyte cell, positioned after a gas chromatographic separation unit, allows the detection of oxidizable components and oxygen with a limit of detection below 100 vol.-ppb for H2. It shows high long-term stability and enables maintenance-free operation.