6.4.4 Development of a gas micro-preconcentrator for the analysis of explosive traces: study and characterization of various adsorbing materials
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- 6.4 Sensors for Explosives
- Y. Mohsen, J. Sanchez, F. Berger, H. Lahlou - Institut Chrono-environnement, UMR CNRS 6249, Université de Franche Comté (France), I. Bezverkhyy, J. Bellat, G. Weber - Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR CNRS 5209, Groupe Adsorption sur Solides Poreux, Université de Bourgogne (France), A. Celzard, V. Fierro - Institut Jean Lamour, Département 2: Chimie et Physique des Solides et des Surfaces, UMR CNRS 7198, Nancy Université (France)
- 559 - 562
Actually, the rapid detection of explosive agents in air has become a real need. In this context, the aim of this research work is to develop a micro-fluidic platform integrated on a silicon substrate for the monitoring of explosive traces in air. This platform is composed by a micro-preconcentrator followed by a chromatographic micro-column and a tin oxide- based sensor. The target molecule studied is the orthonitrotoluene (ONT) known as a simili vapor of trinitrotoluene (TNT). The present study is focused on the gas micro-preconcentrator performances, and in particular on the choice of the adsorbent. Various adsorbents such as activated carbons, polymer and hydrophobic zeolite were then studied in order to identify the best material to be used in the gas preconcentrator.