| Full text | |
| Author(s): |
Migliorini, Fernanda L.
[1]
;
Teodoro, Kelcilene B. R.
[1]
;
dos Santos, Danilo M.
[1]
;
Fonseca, Fernando J.
[2]
;
Mattoso, Luiz H. C.
[1]
;
Correa, Daniel S.
[1]
Total Authors: 6
|
| Affiliation: | [1] Embrapa Instrumentacao, Nanotechnol Natl Lab Agr, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Sao Paulo, Polytech Sch, Dept Engn Sistemas Eletron, Sao Paulo - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | POLYMERS FOR ADVANCED TECHNOLOGIES; v. 31, n. 9 APR 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
Geosmin (GSM) and 2-Methylisoborneol (MIB) are substances commonly found in river water and arise due to eutrophication process. Such contaminants affect the organoleptic properties of water, hampering its consumption, and use in beverage industries. As the human perception threshold for these compounds is low, the devices aimed at their detection must be sensitive enough to detect concentrations as low as a few nanogram per liter in order to guarantee the water quality parameters. Due to the experimental simplicity, fast analysis, portability, and capability for on-site analysis, the use of electronic tongues and electronic noses employing hybrid and composite materials are potential for GSM and MIB determination. In this work, two distinct electronic tongues were applied in the electrical determination of GSM and MIB in pure and river water. The difference between them consisted in the type of polymer processing used in the fabrication of sensing units. The thin films deposited onto gold IDEs were based on polyamide 6, polypirrole, and polyaniline, but fabricated by drop-casting and electrospinning. The differences in the electronic tongue performances were correlated to the distinct morphologies of the sensitive layers. Both devices were able to discriminate pure water from solutions tainted with GSM and MIB in concentration as low as 25 ng L-1, with high data correlation and a good reproducibility. (AU) | |
| FAPESP's process: | 17/20973-4 - Coaxial electrospun nanofibers based on chitosan for controlled release of antibiotics and periodontic lesion treatment |
| Grantee: | Danilo Martins dos Santos |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 18/09414-6 - Implementation of an electronic tongue by flow detection of drinking water contaminants |
| Grantee: | Fernanda Lanzoni Migliorini |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 14/21184-5 - Nanocomposites from cellulose nanocrystals electrospun fibers for the development of polymeric sensors |
| Grantee: | Kelcilene Bruna Teodoro Costa |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 17/12174-4 - Development of hybrid polymer nanofibers for agricultural applications |
| Grantee: | Daniel Souza Corrêa |
| Support Opportunities: | Regular Research Grants |