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Sensors 2008, 8(11), 6885-6898; doi:10.3390/s8116885

A Solid Trap and Thermal Desorption System with Application to a Medical Electronic Nose

1
College of Communication Engineering, Chongqing University, Chongqing, 400044, P.R. China
2
Mianyang Vocational and Technical College, MianYang, Sichuan, 621000, P.R. China
3
School of Engineering, University of Guelph, Guelph, ON, Canada, N1G 2W1
*
Author to whom correspondence should be addressed.
Received: 9 September 2008 / Revised: 19 October 2008 / Accepted: 30 October 2008 / Published: 4 November 2008
(This article belongs to the Section Chemical Sensors)
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Abstract

In this paper, a solid trap/thermal desorption-based odorant gas condensation system has been designed and implemented for measuring low concentration odorant gas. The technique was successfully applied to a medical electronic nose system. The developed system consists of a flow control unit, a temperature control unit and a sorbent tube. The theoretical analysis and experimental results indicate that gas condensation, together with the medical electronic nose system can significantly reduce the detection limit of the nose system and increase the system’s ability to distinguish low concentration gas samples. In addition, the integrated system can remove the influence of background components and fluctuation of operational environment. Even with strong disturbances such as water vapour and ethanol gas, the developed system can classify the test samples accurately. View Full-Text
Keywords: Medical electronic nose; solid trap/thermal desorption; detection limit; antidisturbance Medical electronic nose; solid trap/thermal desorption; detection limit; antidisturbance
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Xu, X.; Tian, F.; Yang, S.X.; Li, Q.; Yan, J.; Machacek, J. A Solid Trap and Thermal Desorption System with Application to a Medical Electronic Nose. Sensors 2008, 8, 6885-6898.

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