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Article

Potentiometric Electronic Tongue for Pharmaceutical Analytics: Determination of Ascorbic Acid Based on Electropolymerized Films

Department of Analytical Chemistry, University of Chemistry and Technology, Technická 5, 166 28 Prague, Czech Republic
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Academic Editor: Juraj Dian
Chemosensors 2021, 9(5), 110; https://doi.org/10.3390/chemosensors9050110
Received: 14 April 2021 / Revised: 10 May 2021 / Accepted: 11 May 2021 / Published: 14 May 2021
(This article belongs to the Special Issue Functionalized Materials for Chemosensor Applications)
This work deals with the design of an experimental potentiometric electronic tongue (ET) for the recognition of various samples of effervescent tablets with different ascorbic acid (vitamin C) contents. The ET consisted of twelve potentiometric sensors based on conductive polymers, which were derived from 4-amino-2,1,3-benzothiadiazole, 3,4-diaminobenzoic acid, and neutral red on the surface of the platinum electrode using cyclic voltammetry. The aim of the potentiometric study was to assess the influence of the vitamin C content and the composition of the matrix of commercial samples on the potentiometric response. The results obtained from the sensor array proved that the stability of the potentiometric signal and the accuracy of measurements are affected by individual sensors. The identification of the vitamin C content in the individual samples of effervescent tablets obtained by means of the potentiometric electronic tongue corresponded with the results of the coulometric titration. View Full-Text
Keywords: electronic tongue; conducting polymer; electropolymerized film; ascorbic acid; effervescent tablet; stability electronic tongue; conducting polymer; electropolymerized film; ascorbic acid; effervescent tablet; stability
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MDPI and ACS Style

Broncová, G.; Prokopec, V.; Shishkanova, T.V. Potentiometric Electronic Tongue for Pharmaceutical Analytics: Determination of Ascorbic Acid Based on Electropolymerized Films. Chemosensors 2021, 9, 110. https://doi.org/10.3390/chemosensors9050110

AMA Style

Broncová G, Prokopec V, Shishkanova TV. Potentiometric Electronic Tongue for Pharmaceutical Analytics: Determination of Ascorbic Acid Based on Electropolymerized Films. Chemosensors. 2021; 9(5):110. https://doi.org/10.3390/chemosensors9050110

Chicago/Turabian Style

Broncová, Gabriela, Vadim Prokopec, and Tatiana V. Shishkanova. 2021. "Potentiometric Electronic Tongue for Pharmaceutical Analytics: Determination of Ascorbic Acid Based on Electropolymerized Films" Chemosensors 9, no. 5: 110. https://doi.org/10.3390/chemosensors9050110

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