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Sensors 2018, 18(8), 2589; https://doi.org/10.3390/s18082589

Design of Novel Ceramic Preconcentrator and Integration in Gas Chromatographic System for Detection of Ethylene Gas from Ripening Bananas

1
International Graduate School for Dynamics in Logistics (IGS), University of Bremen, 28359 Bremen, Germany
2
Institute for Microsensors, -Actuators and -Systems (IMSAS), University of Bremen, 28334 Bremen, Germany
*
Author to whom correspondence should be addressed.
Received: 31 May 2018 / Revised: 25 July 2018 / Accepted: 31 July 2018 / Published: 7 August 2018
(This article belongs to the Section Chemical Sensors)
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Abstract

In this paper, a novel ceramic preconcentrator is manufactured using aluminum nitride (ALN) ceramics. The preconcentrator consists of a heater, a preconcentrator body, a gas inlet and a gas outlet. The adsorption material, Carbosieve SII, is loaded into the preconcentrator. The preconcentrator is integrated with a previously developed micro gas chromatographic system filled with ethylene. When operated, adequate ethylene gas is adsorbed into the preconcentrator. The application of heat pulse also successfully desorbs the ethylene gas. Tests are conducted with ethylene gas at concentrations of 10 ppm, 5 ppm and 2.5 ppm and 400 ppb, respectively. The system is also tested with ethylene gas from ripening bananas over a period of three days. No interference signal is observed in the chromatogram because of other ripening gases (e.g., carbon dioxide, oxygen, alcohol) and humidity. A detection limit of 25 ppb is realized with this system. The developed preconcentrator has several applications, e.g., in food industry and environmental monitoring. View Full-Text
Keywords: ceramic preconcentrator; micro gas chromatographic system; ethylene gas ceramic preconcentrator; micro gas chromatographic system; ethylene gas
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Zaidi, N.A.; Tahir, M.W.; Vellekoop, M.J.; Lang, W. Design of Novel Ceramic Preconcentrator and Integration in Gas Chromatographic System for Detection of Ethylene Gas from Ripening Bananas. Sensors 2018, 18, 2589.

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