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Identification of tobacco types and cigarette brands using an electronic nose based on conductive polymer/porphyrin composite sensors
- Source :
- Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual), Universidade de São Paulo (USP), instacron:USP, ACS Omega, Vol 3, Iss 6, Pp 6476-6482 (2018), ACS Omega
- Publication Year :
- 2018
-
Abstract
- Three tobacco types (Burley, Flue Cured, and Oriental) and eight cigarette brands were unequivocally identified using an electronic nose formed by only three sensors based on a single novel conducting polymer (PF-BTB) doped with different porphyrins (H2TPP, H2TPFP, and H2BTBOP). The synthesis and characterization of the polymer are also discussed. Small changes in the porphyrin structure caused significant changes in the electrical conductance response patterns of the sensors upon exposure to complex chemical matrixes, representing a novel approach for tuning the selectivity of chemiresistive sensors for e-nose application. This e-nose is fast, cheap, reliable, can be easily operated, and could be a valuable tool for border agents fighting cigarette smuggling around the world, helping them prevent losses of millions in tax revenues and sales.
- Subjects :
- Conductive polymer
chemistry.chemical_classification
BIOLOGIA VEGETAL
Materials science
Electronic nose
General Chemical Engineering
010401 analytical chemistry
Composite number
Nanotechnology
02 engineering and technology
General Chemistry
Polymer
021001 nanoscience & nanotechnology
01 natural sciences
Porphyrin
Porphyrin structure
Article
0104 chemical sciences
lcsh:Chemistry
chemistry.chemical_compound
lcsh:QD1-999
chemistry
0210 nano-technology
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual), Universidade de São Paulo (USP), instacron:USP, ACS Omega, Vol 3, Iss 6, Pp 6476-6482 (2018), ACS Omega
- Accession number :
- edsair.doi.dedup.....b0e01cf4a8bac95b8c9fd8da172007e9