A Single Platinum Microelectrode for Identifying Soft Drink Samples

Cyclic voltammograms recorded with a single platinum microelectrode were used along with a non-supervised pattern recognition, namely, Principal Component Analysis, to conduct a qualitative analysis of sixteen different brands of carbonated soft drinks (Kuat, Soda Antarctica, H2OH!, Sprite 2.0, Guar...

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Main Authors: Lígia Bueno, Thiago R. L. C. Paixão
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:International Journal of Electrochemistry
Online Access:http://dx.doi.org/10.1155/2012/264035
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author Lígia Bueno
Thiago R. L. C. Paixão
author_facet Lígia Bueno
Thiago R. L. C. Paixão
author_sort Lígia Bueno
collection DOAJ
description Cyclic voltammograms recorded with a single platinum microelectrode were used along with a non-supervised pattern recognition, namely, Principal Component Analysis, to conduct a qualitative analysis of sixteen different brands of carbonated soft drinks (Kuat, Soda Antarctica, H2OH!, Sprite 2.0, Guarana Antarctica, Guarana Antarctica Zero, Coca-Cola, Coca-Cola Zero, Coca-Cola Plus, Pepsi, Pepsi Light, Pepsi Twist, Pepsi Twist Light, Pepsi Twist 3, Schin Cola, and Classic Dillar’s). In this analysis, soft drink samples were not subjected to pre-treatment. Good differentiation among all the analysed soft drinks was achieved using the voltammetric data. An analysis of the loading plots shows that the potentials of −0.65 V, −0.4 V, 0.4 V, and 0.750 V facilitated the discrimination process. The electrochemical processes related to this potential are the reduction of hydrogen ions and inhibition of the platinum oxidation by the caffeine adsorption on the electrode surface. Additionally, the single platinum microelectrode was useful for the quality control of the soft drink samples, as it helped to identify the time at which the beverage was opened.
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series International Journal of Electrochemistry
spelling doaj-art-bddafc6be0634e898d48dca59ad17ae32025-02-03T01:01:14ZengWileyInternational Journal of Electrochemistry2090-35292090-35372012-01-01201210.1155/2012/264035264035A Single Platinum Microelectrode for Identifying Soft Drink SamplesLígia Bueno0Thiago R. L. C. Paixão1Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP, 09210-170, BrazilCentro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP, 09210-170, BrazilCyclic voltammograms recorded with a single platinum microelectrode were used along with a non-supervised pattern recognition, namely, Principal Component Analysis, to conduct a qualitative analysis of sixteen different brands of carbonated soft drinks (Kuat, Soda Antarctica, H2OH!, Sprite 2.0, Guarana Antarctica, Guarana Antarctica Zero, Coca-Cola, Coca-Cola Zero, Coca-Cola Plus, Pepsi, Pepsi Light, Pepsi Twist, Pepsi Twist Light, Pepsi Twist 3, Schin Cola, and Classic Dillar’s). In this analysis, soft drink samples were not subjected to pre-treatment. Good differentiation among all the analysed soft drinks was achieved using the voltammetric data. An analysis of the loading plots shows that the potentials of −0.65 V, −0.4 V, 0.4 V, and 0.750 V facilitated the discrimination process. The electrochemical processes related to this potential are the reduction of hydrogen ions and inhibition of the platinum oxidation by the caffeine adsorption on the electrode surface. Additionally, the single platinum microelectrode was useful for the quality control of the soft drink samples, as it helped to identify the time at which the beverage was opened.http://dx.doi.org/10.1155/2012/264035
spellingShingle Lígia Bueno
Thiago R. L. C. Paixão
A Single Platinum Microelectrode for Identifying Soft Drink Samples
International Journal of Electrochemistry
title A Single Platinum Microelectrode for Identifying Soft Drink Samples
title_full A Single Platinum Microelectrode for Identifying Soft Drink Samples
title_fullStr A Single Platinum Microelectrode for Identifying Soft Drink Samples
title_full_unstemmed A Single Platinum Microelectrode for Identifying Soft Drink Samples
title_short A Single Platinum Microelectrode for Identifying Soft Drink Samples
title_sort single platinum microelectrode for identifying soft drink samples
url http://dx.doi.org/10.1155/2012/264035
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