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A study of the mechanisms involved in the separation of metal ions with a mixed-bed stationary phase

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  • Column Liquid Chromatography
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Summary

The optimization of chromatographic methods for the determination of metal species require an understanding of the mechanisms involved. In this work, the separation of Cd, Co, Cu, Fe(II/III), Mn, Pb and Zn using a mixed bed column (IonPac CS5A) and a cation-exchange column (IonPac CS2) is studied as a function of mobile phase composition. The type and concentration of complexing agent and of ionic strength modificators were evaluated. The charge of analytes were calculated using the classical ion exchange approach to highlight the effect of eluent composition on retention. The comparative study enabled us to identify an optimal eluent composition for the separation of the nine metal species.

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Authors and Affiliations

  1. Department of Analytical Chemistry, University of Turin, Turin, Italy

    M. C. Bruzzoniti & C. Sarzanini

  2. CNR, Istituto Sperimentale Talassografico, Taranto, Italy

    N. Cardellicchio

  3. Laboratorio Applicazioni Dionex S.r.l., Pieve Emanuele (MI), Italy

    S. Cavalli

Authors
  1. M. C. Bruzzoniti
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  2. N. Cardellicchio
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  3. S. Cavalli
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  4. C. Sarzanini
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Bruzzoniti, M.C., Cardellicchio, N., Cavalli, S. et al. A study of the mechanisms involved in the separation of metal ions with a mixed-bed stationary phase. Chromatographia 55, 231–234 (2002). https://doi.org/10.1007/BF02492147

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  • DOI: https://doi.org/10.1007/BF02492147

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