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Communication

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

1
Department of Chemical Sciences and Technologies, University “Tor Vergata”, 00133 Rome, Italy
2
Laboratory of Artificial Sensory Systems, ITMO University, 197101 St. Petersburg, Russia
3
Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentation, Sao Carlos 13560-970, Brazil
4
Institute of Chemistry, St. Petersburg State University, 199034 St. Petersburg, Russia
5
Department of Electronic Engineering, University “Tor Vergata”, 00133 Rome, Italy
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(3), 821; https://doi.org/10.3390/s20030821
Received: 30 December 2019 / Revised: 25 January 2020 / Accepted: 29 January 2020 / Published: 4 February 2020
(This article belongs to the Special Issue Multisensor Systems and Signal Processing in Analytical Chemistry)
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. View Full-Text
Keywords: taste-and-odor-causing compounds; geosmin; 2-methyl-isoborneol; potentiometric E-tongue; water potability assessment taste-and-odor-causing compounds; geosmin; 2-methyl-isoborneol; potentiometric E-tongue; water potability assessment
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MDPI and ACS Style

Lvova, L.; Jahatspanian, I.; Mattoso, L.H.C.; Correa, D.S.; Oleneva, E.; Legin, A.; Di Natale, C.; Paolesse, R. Potentiometric E-Tongue System for Geosmin/Isoborneol Presence Monitoring in Drinkable Water. Sensors 2020, 20, 821. https://doi.org/10.3390/s20030821

AMA Style

Lvova L, Jahatspanian I, Mattoso LHC, Correa DS, Oleneva E, Legin A, Di Natale C, Paolesse R. Potentiometric E-Tongue System for Geosmin/Isoborneol Presence Monitoring in Drinkable Water. Sensors. 2020; 20(3):821. https://doi.org/10.3390/s20030821

Chicago/Turabian Style

Lvova, Larisa, Igor Jahatspanian, Luiz H.C. Mattoso, Daniel S. Correa, Ekaterina Oleneva, Andrey Legin, Corrado Di Natale, and Roberto Paolesse. 2020. "Potentiometric E-Tongue System for Geosmin/Isoborneol Presence Monitoring in Drinkable Water" Sensors 20, no. 3: 821. https://doi.org/10.3390/s20030821

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