A method of pulse array design for voltammetric electronic tongues

Autor: Luis Gil, Juan Soto, Inmaculada Campos, José-Luis Vivancos, Ramón Martínez-Máñez, Miguel Alcañiz, Rafael Masot
Rok vydání: 2012
Předmět:
Multivariant analysis
Analytical chemistry
Electronic tongues
Iridium
Iron compounds
Electrochemistry
Reference electrode
Stainless steel
chemistry.chemical_compound
Partial least squares
Materials Chemistry
Voltammetric electronic tongue
Well-defined
Instrumentation
Voltammetry
Mathematical models
Metals and Alloys
Organometallics
Condensed Matter Physics
Electronic voltmeters
Surfaces
Coatings and Films
Electronic
Optical and Magnetic Materials
Multi variate analysis
Electrode
Ferrocenes
Stainless steel cylinders
Model problems
Redox process
Design
Materials science
Electronic tongue
Array design
chemistry.chemical_element
TECNOLOGIA ELECTRONICA
Information management
Prediction model
QUIMICA ANALITICA
Rhodium
Electrical and Electronic Engineering
PROYECTOS DE INGENIERIA
Electrodes
Platinum
QUIMICA INORGANICA
Model compound
Ferrocene
chemistry
Electrochemical studies
Reference electrodes
Zdroj: RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname
ISSN: 0925-4005
DOI: 10.1016/j.snb.2011.10.075
Popis: This paper proposes a reasonable methodology for the design of pulse arrays applied in classification and quantification techniques based on the use of pulse voltammetric electronic tongues. As model problem we designed a procedure to predict levels of ferrocene, TCNQ and Ru(bipy)(3)(2+) using a voltammetric electronic tongue employing a set of noble electrodes; i.e. Au, Pt, Ir and Rh. Ferrocene, TCNQ and Ru(bipy)(3)(2+) have been selected as model compounds because these are molecules with well-defined redox processes. The electrodes were housed inside a stainless steel cylinder which was used as the body of the electronic tongue system. A SCE was used as reference electrode. An electrochemical study of the response of ferrocene TCNQ and Ru(bipy)(3)(2+) was carried out as a first step with the aim of characterise the redox processes in these compounds. Different samples containing ferrocene,TCNQ and Ru(bipy)(3)(2+) were prepared following an experimental design in which a system of three compounds/three levels was established. Multivariate analysis based on Partial Least Square (PLS) techniques was applied for data management and prediction models building. Several set of pulses were tested and a general procedure to their design for their use in voltammetric electronic tongues is discussed and proposed. (C) 2011 Elsevier B.V. All rights reserved.
We thank the Spanish Government (projects MAT2009-14564-C04-01), Generalitat Valenciana (project PROMETEO/2009/016) for support. PCI-Mediterraneo A/024590/09/A/03044/10) and the UPV (project PAID-05-10) are gratefully acknowledged.
Databáze: OpenAIRE
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