14 Jan 2022
14 Jan 2022
Status: this preprint is currently under review for the journal DWES.

Qualitative and quasi-quantitative monitoring of drinking water through the use of a smart electronic tongue

Alvaro Arrieta1, Said Marquez1, and Jorge Mendoza2 Alvaro Arrieta et al.
  • 1Department of Biology and Chemistry, University of Sucre, Sincelejo, postal code 700001, Colombia
  • 2Department of Mechanical Engineering, University of Cordoba, Monteria, postal code 230002, Colombia

Abstract. Monitoring the quality of drinking water is undoubtedly an issue of global concern. In this sense, the new analytical approaches that incorporate new technologies are without doubt relevant. The aim of this work is to present the evaluation of a smart electronic tongue device as an alternative for qualitative and quantitative monitoring of drinking water. For this, a smart electronic tongue used consisted of cross-sensitive polypyrrole sensor array, coupled to a multi-channel electronic system (multipotentiostat) based on PSoC technology controlled from a smartphone with a data acquisition and control app. This device was used in the monitoring of drinking water from the Sincelejo city aqueduct system and water samples collected and analyzed by the public health agency were used. The voltammetric measurements carried out with the smart electronic tongue showed cross-sensitivity of the polypyrrole sensor array, which allowed the discrimination of the samples through analysis of principal components by artificial neural networks. In addition, the records made with the smart electronic tongue allowed, through partial least square by artificial neural networks estimating the concentrations of some important analytes in the evaluation of the physicochemical quality of drinking water with R2 values higher than 0.70. The results allowed to conclude that the smart electronic tongue constitutes a valuable analytical tool that allows, in a single measure, to perform qualitative and quantitative chemical analysis, it is also a fast, portable method that can complement traditional analyzes.

Alvaro Arrieta et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on dwes-2021-12', Andres Jaramillo, 05 Apr 2022
    • CC4: 'Reply on CC1', Alvaro Arrieta, 03 May 2022
  • CC2: 'Comment on dwes-2021-12', Jairo Alonso Segura Bermudez, 06 Apr 2022
    • CC3: 'Reply on CC2', Alvaro Arrieta, 03 May 2022
  • RC1: 'Comment on dwes-2021-12', Anonymous Referee #1, 04 May 2022
  • RC2: 'Comment on dwes-2021-12', Anonymous Referee #2, 31 May 2022

Alvaro Arrieta et al.

Alvaro Arrieta et al.


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Short summary
This work evaluates the use of a device inspired by the human taste system to carry out quantitative and qualitative monitoring of drinking water samples. The results showed an excellent ability to discriminate the samples and predict some analytical parameters of interest in controlling their physicochemical quality. This made it possible to conclude that the device called smart electronic tongue has a high technological potential for monitoring drinking water.