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Potentiometric Electronic Tongue to Resolve Mixtures of Sulfide and Perchlorate Anions
Sensors and Biosensors Group, Department of Chemistry, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
Analytical Laboratory, National Research Centre, Dokki, Cairo, Egypt
* Author to whom correspondence should be addressed.
Received: 11 January 2011; in revised form: 24 February 2011 / Accepted: 10 March 2011 / Published: 16 March 2011
Abstract: This work describes the use of an array of potentiometric sensors and an artificial neural network response model to determine perchlorate and sulfide ions in polluted waters, by what is known as an electronic tongue. Sensors used have been all-solid-state PVC membrane selective electrodes, where their ionophores were different metal-phtalocyanine complexes with specific and anion generic responses. The study case illustrates the potential use of electronic tongues in the quantification of mixtures when interfering effects need to be counterbalanced: relative errors in determination of individual ions can be decreased typically from 25% to less than 5%, if compared to the use of a single proposed ion-selective electrode.
Keywords: electronic tongue; ion-selective electrode; artificial neural network; sulfide; perchlorate; phtalocyanine ionophores
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Wilson, D.; Abbas, M.N.; Radwan, A.L.A.; Valle, M. Potentiometric Electronic Tongue to Resolve Mixtures of Sulfide and Perchlorate Anions. Sensors 2011, 11, 3214-3226.
Wilson D, Abbas MN, Radwan ALA, Valle M. Potentiometric Electronic Tongue to Resolve Mixtures of Sulfide and Perchlorate Anions. Sensors. 2011; 11(3):3214-3226.
Wilson, Deivy; Abbas, Mohammed N.; Radwan, Abdel Latief A.; Valle, Manel del. 2011. "Potentiometric Electronic Tongue to Resolve Mixtures of Sulfide and Perchlorate Anions." Sensors 11, no. 3: 3214-3226.