A review of the use of the potentiometric electronic tongue in the monitoring of environmental systems

  • Authors:

  • A. Mimendia;J. M. Gutiérrez;L. Leija;P. R. Hernández;L. Favari;R. Muñoz;M. del Valle

  • Affiliations:

  • Grup de Sensors i Biosensors, Departament de Química, Universitat Autònoma de Barcelona, Edifici Cn, E-08193 Bellaterra, Spain;Grup de Sensors i Biosensors, Departament de Química, Universitat Autònoma de Barcelona, Edifici Cn, E-08193 Bellaterra, Spain;Departamento de Ingeniería Eléctrica, CINVESTAV. Av. Instituto Politécnico Nacional 2508, 07360 Mexico DF, Mexico;Departamento de Ingeniería Eléctrica, CINVESTAV. Av. Instituto Politécnico Nacional 2508, 07360 Mexico DF, Mexico;Departamento de Farmacología, CINVESTAV. Av. Instituto Politécnico Nacional 2508, 07360 Mexico DF, Mexico;Departamento de Ingeniería Eléctrica, CINVESTAV. Av. Instituto Politécnico Nacional 2508, 07360 Mexico DF, Mexico;Grup de Sensors i Biosensors, Departament de Química, Universitat Autònoma de Barcelona, Edifici Cn, E-08193 Bellaterra, Spain

  • Venue:
  • Environmental Modelling & Software
  • Year:
  • 2010

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Abstract

This paper introduces electronic tongue systems for remote environmental monitoring applications. This new approach in the chemical sensor field consists of the use of an array of non-specific sensors coupled with a multivariate calibration tool which may form a node of a sensor network. In our work, the proposed arrays were made up of potentiometric sensors based on polymeric membranes, and the subsequent cross-response processing was based on a multilayer artificial neural network model. Two cases are described: the environmental monitoring of ammonium pollutant plus alkaline ions at different measuring sites in the states of Mexico and Hidalgo (Mexico), and the monitoring of heavy metals (Cu^2^+, Pb^2^+, Zn^2^+ and Cd^2^+) in open air waste streams and rivers heading down the Gulf of Mexico.