Adsorption behavior of hexafluorophosphate on selected bonded phasesJournal of Chromatography A (2006)
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 DateSummer June 30, 2006
Citation InformationI 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
Available at: http://works.bepress.com/nicholas_snow/9/