What is it about?
All polymer based anion-exchangers have a certain hydrophobic properties and can operate as mixed-mode stationary phase in HPLC of ionogenic substances. A new criterium to measure hydrophobicity/ion-exchange ratio is proposed. The hydrophobicity of more than 37 anion-exchangers is evaluated. For the first time, zwitterion exchange properties of Type II (dialkylalkanolammonium type) are discussed.
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Why is it important?
The hydrophobicity of ion-exchangers has been ignored in ion-chromatography of polar compounds for many year, but its contibution to the retention of separation selectivity is crucial in ion chromatography of various charged molecules.
Perspectives
This works opens a new possibilities of using ion-exchangers in HPLC (not only IC) and replace polar embedded stationary phases in many application.
Professor Pavel N Nesterenko
M.V. Lomonosov Moscow State University
Read the Original
This page is a summary of: Hydrophobicity of polymer based anion-exchange columns for ion chromatography, Heliyon, June 2021, Elsevier,
DOI: 10.1016/j.heliyon.2021.e07290.
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