Concentration System For Volatile Compounds
Detection
Author(s)
B. Rutecka, J. Wojtas, J. Mikolajczyk, Z. Bielecki
& T. Stacewicz
Abstract
Detection of trace amounts of substance is a challenging task in many
technologies. Nowadays, a lot of detection systems operate at the detection limit.
It is observed especially in such areas as medicine or security; for example, in
explosive detection. In medicine, the technology of trace substance detection is
associated with breath analysis. Some specific diseases can change the
concentration of certain molecules (biomarkers) in the exhaled air. Because of
the extremely low concentration of explosives’ vapour and volatile compounds
in exhausted breath, very sensitive detection instruments and an efficient system
for their collection are needed. For this purpose, special devices – so-called
concentrators – can be applied. Available solutions of the concentrators are
dedicated to a specific detection system. The paper presents some projects of a
concentration system, designed to cooperate with an optoelectronic sensor using
cavity enhanced absorption spectroscopy (CEAS). Preliminary investigation
showed that this setup provides the opportunity to detect 1 ng of such explosives
as TNT, PETN, RDX and HMX. The results have also shown that such
instruments could be used to detect some disease biomarkers in human breath.
Keywords: optoelectronic sensor, explosives detection, breath analysis,
concentrator system.
Keywords
optoelectronic sensor, explosives detection, breath analysis,concentrator system
Related Book
Other papers in this volume
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