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An electronic tongue for qualitative and quantitative analyses of anions in natural waters

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Abstract

Based on the cross-sensitivity shown by certain metal electrodes for some anions in a liquid media, an array of five potentiometric electrodes (Au, Ag, Pt, Cu and Zn) has been used as an electronic tongue device for the recognition and prediction of common anions chloride, sulfate and bicarbonate in mineral waters. The recognition testing studies included measurements of potential (emf) on solutions of pure salts, mixtures of salt and some mineral waters. Predictions were performed by using partial least square. A good discrimination between different water samples by PCA analysis was found as well as an adequate prediction of the concentration of chloride and sulfate.

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Acknowledgements

We thank the Ministerio de Ciencia y Tecnología (project CTQ2006-15456-C04-01/BQU) for support. R. Labrador thanks the Generalitat Valenciana for a Doctoral Scholarship.

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Authors and Affiliations

  1. Departamento de Química, Instituto de Química Molecular Aplicada, Universidad Politécnica de Valencia, Camino de Vera s/n, 46021, Valencia, Spain

    Roberto Labrador, Juan Soto, Ramón Martínez-Máñez & Luis Gil

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  1. Roberto Labrador
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  2. Juan Soto
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  3. Ramón Martínez-Máñez
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  4. Luis Gil
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Correspondence to Roberto Labrador or Juan Soto.

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Labrador, R., Soto, J., Martínez-Máñez, R. et al. An electronic tongue for qualitative and quantitative analyses of anions in natural waters. J Appl Electrochem 39, 2505–2511 (2009). https://doi.org/10.1007/s10800-009-9942-y

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  • DOI: https://doi.org/10.1007/s10800-009-9942-y

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