Sensor for quantitative analytical determination of sulphite in wine using a system of modified electrode and a membrane absorption system

R. Arce, M. J. Aguirre, J. Romero

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)

Abstract

In this work we present the comparison among three glassy carbon electrodes modified by Co-porphyrin (CoTAPP), orthophenylendiamine (OPD), or both, simultaneously. This comparison shows the differences among their electrochemical behavior and their electrocatalytic behavior toward the oxidation of sulfite. In the case of the glassy carbon modified electrodes, the presence of the copolymer enhances the electrocatalytic performance of the modified electrodes in spite of the non-catalytic response (compared to the bare glassy carbon) of both homopolymersmodified electrodes toward the oxidation of sulfite. Also, the oxidation of sulfite extracted from red wine is showed. The copolymer-modified electrode is capable of oxidizing the extracted free sulfite in a 0.02 M NaOH solution. Through the addition of standards method, a concentration of 44 ppm for free sulfite is found in a Chilean red wine.

Original languageEnglish
Title of host publicationChemical and Biological Sensors 11 -and- MEMS/NEMS 11
EditorsJ. Li, C. R. Kreller, A. Simonian, R. Stefan-van Staden, P. K. Sekhar, P. Vanysek, N. Wu, A. Khosla, Z. P. Aguilar, M. T. Carter, G. Hunter, P. J. Hesketh, L. Nagahara, B. Chin, S. Mitra
PublisherElectrochemical Society Inc.
Pages37-42
Number of pages6
Edition1
ISBN (Electronic)9781623321819
DOIs
Publication statusPublished - 1 Jan 2014
EventSymposia on Chemical Sensors 11: Chemical and Biological Sensors and Analytical Systems and Microfabricated and Nanofabricated Systems for MEMS/NEMS 11 (Chemical and Biological Sensors) - 2014 ECS and SMEQ Joint International Meeting - 226th Meeting of The Electrochemical Society - Cancun, Mexico
Duration: 5 Oct 20149 Oct 2014

Publication series

NameECS Transactions
Number1
Volume64
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

ConferenceSymposia on Chemical Sensors 11: Chemical and Biological Sensors and Analytical Systems and Microfabricated and Nanofabricated Systems for MEMS/NEMS 11 (Chemical and Biological Sensors) - 2014 ECS and SMEQ Joint International Meeting - 226th Meeting of The Electrochemical Society
Country/TerritoryMexico
CityCancun
Period5/10/149/10/14

ASJC Scopus subject areas

  • Engineering(all)

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