Electronic Nose Based on Carbon Nanocomposite Sensors for Clove Essential Oil Detection

ACS Sensors
Adriana M GraboskiClarice Steffens

Abstract

This work describes the development of an electronic nose (e-nose) based on carbon nanocomposites to detect clove essential oil (CEO), eugenol (EUG), and eugenyl acetate (EUG.ACET). Our e-nose system comprises an array of six sensing units modified with nanocomposites of poly(aniline), graphene oxide, and multiwalled carbon nanotubes doped with different acids, dodecyl benzene sulfonic acid, camphorsulfonic acid, and hydrochloric acid. The e-nose presented an excellent analytical performance to the detected analytes (CEO, EUG, and EUG.ACET) with high sensitivity and reversibility. The limit of detection was lower than 1.045 ppb, with response time (<13.26 s) and recovery time (<106.29 s) and low hysteresis. Information visualization methods (PCA and IDMAP) demonstrated that the e-nose was efficient to discriminate the different concentrations of analyte volatile oil compounds. PM-IRRAS measurements suggest that the doping mechanism of molecular architectures is composed of a change in the oscillation energy of the characteristic dipoles and changes in the molecular orientation dipoles C═C and C═O at 1615 and 1740 cm-1, respectively. The experimental results indicate that our e-nose system is promising for a rapid analysis metho...Continue Reading

References

Feb 20, 2003·Journal of Agricultural and Food Chemistry·M Consuelo Díaz-MarotoM Dolores Cabezudo
Feb 2, 2011·The Analyst·Fernando V PaulovichMaria Cristina F de Oliveira
Sep 13, 2012·Sensors·Clarice SteffensPaulo Sergio De Paula Herrmann
May 1, 2015·Journal of Nanoscience and Nanotechnology·Juliana S SilvaMarystela Ferreira
Jul 7, 2015·Scientific Reports·M LiuC L Chen
Dec 24, 2015·Talanta·Rey Alfred G RañolaFortunato B Sevilla
Sep 3, 2017·International Journal of Biological Macromolecules·Yasir Ali ArfatMehrajfatimah Mullah
Sep 10, 2018·Food Research International·Adriana Marcia GraboskiClarice Steffens
Aug 29, 2019·ACS Omega·Deepika MalpaniBhanu Nandan

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