Synergistic extraction of sodium into nitrobenzene by using hydrogen dicarbollylcobaltate and dodecaethylene glycol

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Abstract

Solvent extraction of microamounts of sodium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B) in the presence of dodecaethylene glycol (DDEG, L) has been investigated. The equilibrium data have been explained assuming that the species HL+, H2L2+, NaL+ and NaHL2+ (L = DDEG) are extracted into the organic phase. The values of extraction and stability constants of the complex species in nitrobenzene saturated with water have been determined.

Keywords

Sodium cation Dodecaethylene glycol Complexation Hydrogen dicarbollylcobaltate Water–nitrobenzene system Extraction and stability constants 

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2012

Authors and Affiliations

  1. 1.Faculty of Environmental SciencesCzech University of Life Sciences, PraguePrague 6Czech Republic
  2. 2.Department of Analytical ChemistryInstitute of Chemical Technology, PraguePrague 6Czech Republic
  3. 3.Nuclear Research InstituteŘežCzech Republic

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