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Adsorption behavior of hexafluorophosphate on selected bonded phases
Journal of Chromatography A (2006)
  • I L Kazakevich
  • Nicholas Snow
The adsorption behavior of ammonium hexafluorophosphate was studied on four HPLC columns packed with adsorbents of different ability for dispersive interactions using frontal chromatography with LC/MS detection in negative ESI mode. Hexafluorophosphate (PF6−) adsorption isotherms were measured from acetonitrile/water and methanol/water mixtures. Increased PF6− adsorption with increased acetonitrile content was found between 0 and 15% of acetonitrile in the eluent. Further increase of the acetonitrile concentration leads to an exponential decrease of PF6− adsorption. Methanol, on the other hand, causes a steady decrease of PF6− adsorption with increased organic concentration in the mobile phase.
  • Ion-pair chromatography,
  • Frontal chromatography,
  • Adsorption isotherms
Publication Date
Summer June 30, 2006
Citation Information
I L Kazakevich and Nicholas Snow. "Adsorption behavior of hexafluorophosphate on selected bonded phases" Journal of Chromatography A Vol. 1119 Iss. 1-2 (2006) p. 43 - 50
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