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

Autor(es)

Graboski, Adriana M. ^[1] ; Zakrzevski, Claudio A. ^[1] ; Shimizu, Flavio M. ^[2] ; Paschoalin, Rafaella T. ^[2] ; Soares, Andrey C. ^[3] ; Steffens, Juliana ^[1] ; Paroul, Natalia ^[1] ; Steffens, Clarice ^[1]

Afiliação do(s) autor(es)

^[1] URI Erechim, Food Engn, BR-99709910 Erechim, RS - Brazil

^[2] Univ Sao Paulo, Sao Carlos Inst Phys, BR-13566590 Sao Carlos, SP - Brazil

^[3] Embrapa Instrumentat, Nanotechnol Natl Lab Agribusiness LNNA, BR-13560970 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ACS SENSORS; v. 5, n. 6, p. 1814-1821, JUN 26 2020.
• Citações Web of Science: 0

Resumo

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 method to monitor the quality of essential oils. (AU)

• Processo FAPESP: 18/18953-8 - Filmes nanoestruturados aplicados em biossensores microfluídicos para detecção de mastite bacteriana
• Beneficiário: Andrey Coatrini Soares
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 17/18725-2 - Nanofibras híbridas com estruturas núcleo-casca e Janus obtidas por fiação por sopro em solução
• Beneficiário: Rafaella Takehara Paschoalin
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado