Abstract
This paper presents an advanced voltammetric system to be used as electronic tongue for liquid and gas analysis. It has been designed to be more flexible and accurate with respect to other existing and similar systems. It features improved electronics and additional operative conditions. Among others these include the possibility to optically excite the solution and to treat the output signal by a differentiation process in order to better evidence the existence of small details in the response curve. Finally by the same type of tongue preliminary results are shown dealing with O2 and CO2 concentration measurements in appropriate solutions.
Highlights
Cyclic voltammetry (CV) is one of the most-important and most-widespread applied electrochemical techniques (Legin et al, 1997; Tahara and Toko, 2013)
Screen-printed electrodes (SPE) and MFE4 were compared by using a solution of DI water containing concentrations (0.1, 0.5, 1, 2, 3, 4 mM) of ferrocyanide ions Fe(CN)4
In this work we have described a more complete voltammetric system called electronic tongue for the determination of the features related to red-ox reaction of analytes in solutions and compare it with the state of the art (Legin et al, 1995, 1997, 1999a; Arrieta et al, 2004; Vlasov et al, 2005; Rudnitskaya and Legin, 2008; del Valle, 2012; Tahara and Toko, 2013)
Summary
Cyclic voltammetry (CV) is one of the most-important and most-widespread applied electrochemical techniques (Legin et al, 1997; Tahara and Toko, 2013). The ET has been employed to discriminate mainly chemical species in liquids (Legin et al, 1995, 1997, 1999a; Vlasov et al, 2005) by an array of chemically sensitive devices such as ion-selective electrodes characterized by different specificity and through a typical statistical analysis such as Principal Component Analysis(PCA) and Partial least Square(PLS) or specific neural networks (Krantz-Rülcker et al, 2001; Legin et al, 2004; Rudnitskaya and Legin, 2008). It worth pointing out that for the human tongue, characterized by sufficiently well localized taste bioreceptors, they seem to be non-perfectly specific
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