Related Experiment Video
Updated: Jun 28, 2026

Spin Saturation Transfer Difference NMR (SSTD NMR): A New Tool to Obtain Kinetic Parameters of Chemical Exchange Processes
Published on: November 12, 2016
Study of ion exchange selectivity of organic ions by using (31)P NMR spectroscopy
A Marton1, H Sakashita, Y Miura
1Department of Environmental Science, Atmospheric Chemistry Research Group, Hungarian Academy of Sciences, University of Veszprém, H-8201 Veszprém, Hungary.
Abstract:
Ion exchange distribution of the phenylphosphoric acid has been studied on various types of chloride form strong base resins as a function of pH at 25 degrees C, at 0.1 M ionic strength. Equilibrium measurements were supplemented by the study of pH dependence of the (31)P NMR spectra of the resin-phase phenylphosphate species. Equations were derived to describe the pH dependence of the overall distribution coefficient and the chemical shift of the resin-phase solute species. Experimental data were evaluated by using these model equations and the values of the individual distribution coefficients, ion exchange selectivity coefficients and the resin-phase (31)P chemical shifts of the mono- and divalent ions have been calculated. Comparison of distribution data of the individual species corroborated the significance of the role of hydrophobic interaction in the selectivity of organic ion exchange processes. A well-defined correlation between the ion exchange selectivity and the resin-phase (31)P NMR chemical shift data has been pointed out.
More Related Videos
09:01Metabolomic Analysis of Rat Brain by High Resolution Nuclear Magnetic Resonance Spectroscopy of Tissue Extracts
Published on: September 21, 2014
10:41Ion Exchange Chromatography (IEX) Coupled to Multi-angle Light Scattering (MALS) for Protein Separation and Characterization
Published on: April 5, 2019
Related Concept Videos
Ion-Exchange Chromatography
Ion Exchange
Other Nuclides: 31P, 19F, 15N NMR
While fluorine-19 and phosphorous-31 have high natural abundances (100%) and positive gyromagnetic ratios, nitrogen-15 has a low natural abundance and a negative gyromagnetic ratio. However, nitrogen-15 is still preferred over nitrogen-14 (which has a high...
Extraction: Advanced Methods
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)
¹H NMR: Pople Notation
A proton...