Separation of rare earth elements by high performance liquid chromatography using a covalent modified silica gel column

R. Garcia-Valls, A. Hrdlicka, J. Perutka, J. Havel, N. V. Deorkar, Lawrence L Tavlarides, M. Muñoz, M. Valiente

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A new modified silica gel material with chemically bound phosphonic acid was tested as lanthanide ions adsorption and their basic characteristics (thermodynamics, stability and physical description) studied. This inorganic chemically active beads (ICABs) are suitable for the solid phase extraction (SPE) and separation of the rare earth elements (REE). The HPLC procedure, using the 10 μm diameter ICAB with chemically immobilized phosphonic acid [alpha]-hydroxyisobutyric acid (HIBA) as the eluent and the post-column derivatization using Arsenazo III as the reagent, was worked out and found efficient to perform a good separation of REE.

Original languageEnglish (US)
Pages (from-to)247-253
Number of pages7
JournalAnalytica Chimica Acta
Issue number2
StatePublished - Jul 25 2001



  • HPLC
  • Modified silica
  • Rare earths
  • Separation

ASJC Scopus subject areas

  • Biochemistry
  • Analytical Chemistry
  • Spectroscopy
  • Environmental Chemistry

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