Simultaneous voltammetric determination of heavy metals by use of crown ether-modified electrodes and chemometrics

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Title:	Simultaneous voltammetric determination of heavy metals by use of crown ether-modified electrodes and chemometrics
Author:	González-Calabuig, Andreu; Guerrero, David; Serrano i Plana, Núria; Valle Zafra, Manuel del
Abstract:	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.
Subject(s):	-Crown ether-modified sensors -Electrochemical grafting -Heavy metal -Stripping voltammetry -Artificial neural network
Rights:	open access Tots els drets reservats. https://rightsstatements.org/vocab/InC/1.0/
Document type:	Article
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Uri:	https://ddd.uab.cat/record/154709