Simultaneous Titration of Ternary Mixtures of Pb(II), Cd(II) and Cu(II) with Potentiometric Electronic Tongue Detection
Electroanalysis, ISSN: 1521-4109, Vol: 27, Issue: 2, Page: 336-342
2015
- 10Citations
- 20Captures
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Article Description
An automatic titration method is reported to resolve ternary mixtures of transition metals (Pb, Cd and Cu) 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 for the three target ions and reproducibilities 3.0% for Pb, 4.1% for Cd and 5.2% for Cu. The system was applied to contaminated soil samples and high accuracy was obtained for the determination of Pb. In the determination Cd and Cu, sample matrix showed a significant effect.
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