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Solubilization of 4-(2-Pyridylazo)resorcinol in hydrophobic–hydrophilic ionic liquids and extraction of heavy metal ions from aqueous solutions

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Moscow University Chemistry Bulletin Aims and scope

Abstract

The distribution of 4-(2-pyridylazo)resorcinol, PAR (5 × 10–4–1 × 10–2 M) in the systems tetraoctylammonium N-lauroylsarcosinate (TOALS)–water and trioctylmethylammonium salicylate (TOMAS)–water is studied. It is shown that the distribution coefficient of PAR does not depend on the ionic state of the reagent in aqueous solution at pH 2.3–11.8; the logD values are 3.5 and 3.7 (V o: V w = 1: 20) for TOALS and TOMAS, respectively. The conditions for quantitative extraction of the ions of cadmium(II), lead(II), cobalt(II), copper(II), and zinc(II) in TOALS and TOMAS in the presence of 4-(2-pyridylazo)resorcinol are determined.

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Authors and Affiliations

  1. Department of Chemistry, Moscow State University, Moscow, 119991, Russia

    S. V. Smirnova, T. O. Samarina, D. V. Ilin & I. V. Pletnev

Authors
  1. S. V. Smirnova
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  2. T. O. Samarina
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  3. D. V. Ilin
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  4. I. V. Pletnev
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Corresponding author

Correspondence to S. V. Smirnova.

Additional information

Original Russian Text © S.V. Smirnova, T.O. Samarina, D.V. Ilin, I.V. Pletnev, 2015, published in Vestnik Moskovskogo Universiteta. Khimiya, 2015, No. 5, pp. 286–291.

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Smirnova, S.V., Samarina, T.O., Ilin, D.V. et al. Solubilization of 4-(2-Pyridylazo)resorcinol in hydrophobic–hydrophilic ionic liquids and extraction of heavy metal ions from aqueous solutions. Moscow Univ. Chem. Bull. 70, 229–233 (2015). https://doi.org/10.3103/S0027131415050120

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  • DOI: https://doi.org/10.3103/S0027131415050120

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