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Acid-Base Equilibria and Metal Extraction Properties of 1-Phenyl-1,3-decanedione

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Abstract

The acid-base equilibrium constant of the active component of the commercial extractant LIX 54, l-phenyl-1,3-decanedione, has been determined in a water/ alcohol mixed solvent (25% ethanol) at 298 K using 1.0 mol dm−3 KCl as an ionic medium. Graphical and numerical treatment of spectrophotometric data have led to the value pKa=9.73±0.05. The distribution, aggregation and interactions of the reagent with other extractants used in synergistic mixtures are also discussed. A comparison of the extraction of Cu(II), Ni(II) and Zn(II) from nitrate solutions by the reagent and by mixtures of the reagent with additional ligands in toluene has been made.

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Authors and Affiliations

  1. Department of Analytical Chemistry, the University of the Basque Country, Apdo 644, 48080, Bilbao, Spain

    María Jesús Zapatero, María Puy Elizalde & José Maria Castresana

Authors
  1. María Jesús Zapatero
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  2. María Puy Elizalde
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  3. José Maria Castresana
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Zapatero, M.J., Elizalde, M.P. & Castresana, J.M. Acid-Base Equilibria and Metal Extraction Properties of 1-Phenyl-1,3-decanedione. ANAL. SCI. 7, 935–940 (1991). https://doi.org/10.2116/analsci.7.935

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  • DOI: https://doi.org/10.2116/analsci.7.935

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