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Russian Chemical Bulletin

, Volume 58, Issue 8, pp 1731–1735 | Cite as

Adsorption of naproxen enantiomers from solutions on chemically modified cellulose. The effect of a polar component of a liquid phase

  • L. D. Asnin
  • K. Kaczmarski
  • E. N. Reshetova
Full Articles

Abstract

The influence of mobile phase composition (hexane-ethanol with the addition of 0.1 vol.% of trifluoroacetic acid) on the adsorption of the naproxen enantiomers on a chiral adsorbent Chiralcel OJ-H was investigated. Methods of linear and nonlinear chromatography were used to investigate adsorption thermodynamics at infinite dilution and to measure adsorption isotherms for solutions containing 10 and 20 vol.% of ethanol. It was found that two groups of adsorption sites coexist on the surface of the adsorbent in contact with the mentioned solvent, strong and weak ones, with the strong adsorption sites contributing mainly to the adsorption of naproxen. The effect of ethanol content on the retention of naproxen consists of the change in the number of the strong adsorption sites and regulating solvation property of a solvent.

Key words

enantioselective adsorption enantiomers naproxen chiral stationary phase Chiralcel adsorption 

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Copyright information

© Springer Science+Business Media, Inc.  2009

Authors and Affiliations

  1. 1.Institute of Technical Chemistry of the Ural Branch of the Russian Academy of SciencesPermRussian Federation
  2. 2.Rzeszow University of TechnologyRzeszowPoland

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