Chapter 30 Potentiometric electronic tongues applied in ion multidetermination

Publisher Summary This chapter discusses the application of electronic tongues as analytical systems for multidetermination of species in batch conditions and also integrated in flow injection analysis and sequential injection analysis systems. The preferred chemometrics tool to model its response—artificial neural networks (ANNs)—is also discussed in the chapter. Various precautions for its use together with options and configurations have been described. The ways employed to check the goodness of fit of a developed response model have also been explained. The electronic tongue concept has been successfully proved to be a feasible alternative for multiple analyte determinations, specially suited for monitoring applications, where it can provide real-time multicomponent information, simultaneously compensating matrix effects when used in a dynamic manner. Multicomponent determination is one of the possibilities brought by electronic tongues. Other applications are in its qualitative application, where a classification of sample varieties is one of the possibilities, but where assessment of non-directly or non-easily quantifiable aspects, such as aging or perception can be also attempted.

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