Abstract
This chapter presents recent work with electronic tongues, that is sensor analytical systems formed by an array of chemical sensors featuring low selectivity plus a chemometric tool to process the complex multivariate data that is generated. As the generic application covered is related to security, the described systems are those devised to identify and detect explosive compounds. These are characterized from their voltammetric features, whereas a particular fingerprint is used to identify particular compounds alone, or, in a more advanced application, to resolve mixtures of compounds, that is to quantify their presence in mixtures. Two are the main approaches shown, a first from the use of a voltammetric screen printed electrode, and a second one from an array of metallic electrodes. Detected compounds are different nitro-based energetic compounds, and later, also the identification of organic peroxide type compounds.
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Acknowledgements
Financial support from the Spanish Ministry of Economy and Innovation, MINECO (Madrid) through project CTQ2013-41577-P is gratefully acknowledged. M. del Valle thanks the support from program ICREA Academia. A. González-Calabuig thanks the Universitat Autònoma de Barcelona (UAB) for the award of PIF studentship.
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González-Calabuig, A., del Valle, M. (2016). Voltammetric Electronic Tongue for the Sensing of Explosives and Its Mixtures. In: Nikolelis, D., Nikoleli, GP. (eds) Biosensors for Security and Bioterrorism Applications. Advanced Sciences and Technologies for Security Applications. Springer, Cham. https://doi.org/10.1007/978-3-319-28926-7_4
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