Thermodynamic characterization of the liquid-liquid extraction of silver by acyclic dithia benzene derivatives

Teresa Flor, Isabel Romero, María Muñoz, Manuel Valiente, Jaume Casabó

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4 Citations (Scopus)

Abstract

A study of the liquid-liquid extraction equilibria between aqueous Ag(I) and 1,3-bis[(ethylthio)methyl]benzene, 1,3-bis[(pentylthio)methyl]benzene and 1,3-bis[(octylthio)methyl]benzene in chloroform solution, is reported.The results have been expressed in terms of solvent extraction reactions between Ag(I) in aqueous solution and the ligands in the organic phase.A numerical analysis of the metal distribution data has determined the following reactions to be responsible for the extraction process in all cases:Ag++L(org)+NO-3→[LAg(NO3)](org)Ag++2L(org)+NO-3→[L2Ag(NO3)](org)From this analysis polynuclear species have also been found to be formed in the aqueous phase. Thus, trinuclear species [L3Ag3(NO3)3] were found to give the best interpretation of the experimental data. Copyright (C) 1998 Elsevier Science B.V.
Original languageEnglish
Pages (from-to)127-133
JournalAnalytica Chimica Acta
Volume375
Issue number1-2
DOIs
Publication statusPublished - 27 Nov 1998

Keywords

  • Acyclic dithia benzene derivatives
  • Liquid-liquid distribution
  • Silver extraction

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