Potentiometric E-tongue system for geosmin/isoborneol presence monitoring in drinkable water

Larisa Lvova, Igor Jahatspanian, Luiz H.C. Mattoso, Daniel S. Correa, Ekaterina Oleneva, Andrey Legin, Corrado Di Natale, Roberto Paolesse

Research output

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Article number821
JournalSensors (Switzerland)
Volume20
Issue number3
DOIs
Publication statusPublished - 1 Feb 2020

Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering

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  • Cite this

    Lvova, L., Jahatspanian, I., Mattoso, L. H. C., Correa, D. S., Oleneva, E., Legin, A., Natale, C. D., & Paolesse, R. (2020). Potentiometric E-tongue system for geosmin/isoborneol presence monitoring in drinkable water. Sensors (Switzerland), 20(3), [821]. https://doi.org/10.3390/s20030821