Simultaneous Voltammetric Determination of Heavy Metals by Use of Crown Ether-modified Electrodes and Chemometrics

Andreu González-Calabuig, David Guerrero, Núria Serrano, Manel del Valle

Research output: Contribution to journalArticleResearchpeer-review

28 Citations (Scopus)

Abstract

© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. A three-sensor array consisting of a graphite-epoxy composite electrode (GEC), 4-carboxybenzo-18-crown-6-GEC and 4-carboxybenzo-15-crown-5-GEC was employed for the simultaneous determination of Cd(II), Pb(II) and Hg(II) by differential pulse anodic stripping voltammetry (DPASV). Sensors were firstly studied for the determination of Hg(II); secondly, peak current responses confirmed that all sensors showed differentiated response for the three considered metals. A response model was developed to resolve mixtures of Cd(II), Pb(II) and Hg(II) at the μg L-1 level; Discrete Wavelet Transform was selected as preprocessing tool and artificial neural network used for the modelling of the obtained responses.
Original languageEnglish
Pages (from-to)663-670
JournalElectroanalysis
Volume28
Issue number4
DOIs
Publication statusPublished - 1 Apr 2016

Keywords

  • Artificial neural network
  • Crown ether-modified sensors
  • Electrochemical grafting
  • Heavy metal
  • Stripping voltammetry

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