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Studies on the potentiometric thallium(III)-selective carbon paste electrode and its possible applications

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Abstract

Construction, performance characteristics and applications of a carbon paste thallium(III) ion-selective electrode are described. The electrode, which is based on ion-associate compounds formed between cetylpyridinium and chlorothallate(III) complexes dissolved in tricresyl phosphate as pasting liquid, showed near-Nernstian response over the concentration range of 5.8 × 10–6– 2.9 × 10–3 mol/L. Potentiometric titrations of thallium(III) with cetylpyridinium chloride were affected by higher concentrations of excess halides, probably due to the formation of higher halogenothallates.

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Authors and Affiliations

  1. Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, 532 10 Pardubice, Czech Republic, , , , , , CZ

    K. Vytřas, E. Khaled & J. Ježková

  2. Microanalytical Laboratory, National Research Centre, Dokki, Cairo, Egypt, , , , , , EG

    H. N. A. Hassan

  3. Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt, , , , , , EG

    B. N. Barsoum

Authors
  1. K. Vytřas
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  2. E. Khaled
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  3. J. Ježková
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  4. H. N. A. Hassan
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  5. B. N. Barsoum
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Received: 16 August 1999 / Revised: 3 December 1999 / /Accepted: 8 December 1999

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Vytřas, K., Khaled, E., Ježková, J. et al. Studies on the potentiometric thallium(III)-selective carbon paste electrode and its possible applications. Fresenius J Anal Chem 367, 203–207 (2000). https://doi.org/10.1007/s002160051625

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  • DOI: https://doi.org/10.1007/s002160051625

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