Potentiometric E-Tongue System for Geosmin/Isoborneol Presence Monitoring in Drinkable Water

Autor(es)

Lvova, Larisa ^{[1, 2]} ; Jahatspanian, Igor ^[1] ; Mattoso, Luiz H. C. ^[3] ; Correa, Daniel S. ^[3] ; Oleneva, Ekaterina ^[1] ; Legin, Andrey ^{[1, 4]} ; Di Natale, Corrado ^{[1, 5]} ; Paolesse, Roberto ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] ITMO Univ, Lab Artificial Sensory Syst, St Petersburg 197101 - Russia

^[2] Univ Tor Vergata, Dept Chem Sci & Technol, I-00133 Rome - Italy

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

^[4] St Petersburg State Univ, Inst Chem, St Petersburg 199034 - Russia

^[5] Univ Tor Vergata, Dept Elect Engn, I-00133 Rome - Italy

• Tipo de documento: Artigo Científico
• Fonte: SENSORS; v. 20, n. 3 FEB 2020.
• Citações Web of Science: 7

Resumo

A potentiometric E-tongue system based on low-selective polymeric membrane and chalcogenide-glass electrodes is employed to monitor the taste-and-odor-causing pollutants, geosmin (GE) and 2-methyl-isoborneol (MIB), in drinkable water. The developed approach may permit a low-cost monitoring of these compounds in concentrations near the odor threshold concentrations (OTCs) of 20 ng/L. The experiments demonstrate the success of the E-tongue in combination with partial least squares (PLS) regression technique for the GE/MIB concentration prediction, showing also the possibility to discriminate tap water samples containing these compounds at two concentration levels: the same OTC order from 20 to 100 ng/L and at higher concentrations from 0.25 to 10 mg/L by means of PLS-discriminant analysis (DA) method. Based on the results, developed multisensory system can be considered a promising easy-to-handle tool for express evaluation of GE/MIB species and to provide a timely detection of alarm situations in case of extreme pollution before the drinkable water is delivered to end users. (AU)

• Processo FAPESP: 17/12174-4 - Desenvolvimento de nanofibras poliméricas híbridas para aplicação na agricultura
• Beneficiário: Daniel Souza Corrêa
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/50440-7 - Análise da qualidade da água on line (ACQUA-OnLine)
• Beneficiário: Fernando Josepetti Fonseca
• Modalidade de apoio: Auxílio à Pesquisa - Parceria para Inovação Tecnológica - PITE