Simultaneous titration of ternary mixtures of Pb(II), Cd(II) and Cu(II) with potentiometric electronic tongue detection
Wilson Massó, Deivy (Universitat Autònoma de Barcelona. Grup de Sensors i Biosensors)
Alegret, Salvador, 1947- (Universitat Autònoma de Barcelona. Grup de Recerca de Sensors i Biosensors)
Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Grup de Sensors i Biosensors)

Data: 2015
Resum: An automatic titration method is reported to resolve ternary mixtures of transition metals (Pb²⁺,Cd²⁺ and Cu²⁺) employing electronic tongue detection and a reduced number of pre-defined additions of EDTA titrant. Sensors used were PVC membrane selective electrodes with generic response to heavy-metals, plus an artificial neural network response model. Detection limits obtained were ca. 1 mg L¯¹ for the three target ions and reproducibilities 3. 0 % for Pb²⁺, 4. 1 % for Cd²⁺ and 5. 2 % for Cu²⁺. The system was applied to contaminated soil samples and high accuracy was obtained for the determination of Pb²⁺. In the determination Cd²⁺ and Cu²⁺,sample matrix showed a significant effect.
Nota: Número d'acord de subvenció MCINN/CTQ2013-41577
Drets: Tots els drets reservats.
Llengua: Anglès
Document: article ; recerca ; acceptedVersion
Matèria: Electronic tongue ; Simultaneous titration ; Sensor array ; Transition metals ; Ion selective electrodes ; Artificial neural networks
Publicat a: Electroanalysis, Vol. 27 Issue 2 (Feb. 2015) , p. 336-342, ISSN 1040-0397

DOI: 10.1002/elan.201400480

15 p, 1.7 MB

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