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Portable MEMS GC System for Early Detection of Armillaria Fungi

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2015 ASABE Annual International Meeting  152175631.(doi:10.13031/aim.20152175631)
Authors:   Milad Navaei, Peter J Hesketh, Jean-Marie D Dimandja, x Song, K. Schoenwald, A. Mahdavifa, P. J. Hesketh, G. McMurray
Keywords:   MEMS, Gas chromatography, Armillaria fungus, TCD sensor, Portable

Abstract. In this study, an innovative, portable MEMS-gas chromatography system was designed, fabricated and integrated with the goal of detecting the volatile organic compounds (VOC) gases released by infected plants with Armillaria fungus. In order to evaluate the performance of the MEMS- GC, a standard GC-MS system was used to measure the VOC gases of an inoculated Armillaria fungus compared against the growth media. Following this process, a portable, low power MEMS GC system was developed using MEMS technology, optimized to separate and detect the VOC compounds in less than 2 minutes. As part of this effort, an innovative heating technique was developed to control the temperature along the length of the column, ultimately reducing the temperature-programming time and improving the resolution of the peaks. This study concluded that under laboratory conditions, the MEMS-GC column was highly capable in separating 21 compounds commonly released by Armillaria fungus allowing more rapidly sample analysis than current methods.

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