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Pàgina inicial > Articles > Articles publicats > Simultaneous voltammetric determination of heavy metals by use of crown ether-modified electrodes and chemometrics |
Data: | 2016 |
Resum: | 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. |
Ajuts: | Ministerio de Economía y Competitividad CTQ2013-41577-P Ministerio de Economía y Competitividad CTQ2012-32863 |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió acceptada per publicar |
Matèria: | Crown ether-modified sensors ; Electrochemical grafting ; Heavy metal ; Stripping voltammetry ; Artificial neural network |
Publicat a: | Electroanalysis, Vol. 28, Issue 4 (April 2016) p. 663-670, ISSN 1521-4109 |
Post-print 9 p, 1.2 MB |