Title: Fungicide residue identification and discrimination using a conducting polymer electronic-nose
Author: Wilson, Alphus D.;
Source: Proceedings of the Fourth International Conference on Sensor Device Technologies and Applications, Barcelona, Spain, S. Yurish, I. Chilibon, V. Carvalho, & S. Gervais-Ducouret, eds., Xpert Publishing Services, Wilmington, DE, USA. ISBN: 978-1-61208-297-4.
Publication Series: Full Proceedings
Description: The identification of fungicide residues on crop foliage is necessary to make periodic pest management decisions. The determination of fungicide residue identities currently is difficult and time consuming using conventional chemical analysis methods such as gas chromatography-mass spectroscopy. Different fungicide types produce unique electronic aroma signature patterns when headspace volatiles are analyzed using a multi-sensor array within an electronic–nose device. The advantage of electronic-nose sensor devices over conventional methods is that fungicides may be rapidly identified even in the presence of complex plant volatile organic compounds derived from crop foliage that may be present in the headspace mixture. New methods were developed for a conducting polymer type electronic nose device, the Aromascan A32S with a 32-sensor array, to accurately identify and discriminate between fungicide residues types in vitro. The A32S electronic nose distinguished between nine of eleven fungicide types, providing correct identification determinations at frequencies ranging from 84-98%. The distribution of aroma class components, defined by the principal aroma elements detected for each fungicide type analyzed, was determined providing some indications of chemical relatedness between different fungicide aroma classes. The A32S electronic-nose device was capable of providing effective identification and discrimination determinations of most fungicide residue types tested in vitro and has strong potential feasibility for making e-nose fungicide residue determinations on plant (crop) surfaces in the field.
Keywords: electronic aroma detection, e-nose technologies, volatile organic compounds, fungicide identification
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- You may send email to email@example.com to request a hard copy of this publication. (Please specify exactly
which publication you are requesting and your mailing address.)
XML: View XML
Wilson, Alphus D. 2013. Fungicide residue identification and discrimination using a conducting polymer electronic-nose. Pp. 116-121. In: Proceedings of the Fourth International Conference on Sensor Device Technologies and Applications, Barcelona, Spain, S. Yurish, I. Chilibon, V. Carvalho, & S. Gervais-Ducouret, eds., Xpert Publishing Services, Wilmington, DE, USA. ISBN: 978-1-61208-297-4.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility