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. Departament de Química)
Alegret, Salvador, 1947-
(Universitat Autònoma de Barcelona. Departament de Química)
Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
Date: |
2015 |
Abstract: |
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. |
Grants: |
Ministerio de Ciencia e Innovación CTQ2013-41577
|
Rights: |
Tots els drets reservats. |
Language: |
Anglès |
Document: |
Article ; recerca ; Versió acceptada per publicar |
Subject: |
Electronic tongue ;
Simultaneous titration ;
Sensor array ;
Transition metals ;
Ion selective electrodes ;
Artificial neural networks |
Published in: |
Electroanalysis, Vol. 27 Issue 2 (Feb. 2015) , p. 336-342, ISSN 1521-4109 |
DOI: 10.1002/elan.201400480
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Record created 2015-12-15, last modified 2023-10-04