Ion pair chromatography question

Basic questions from students; resources for projects and reports.

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Can someone explain how do ion-pair chromatography separate mixtures od acidic/basic compounds?
The (over)simplified explanation is that some of the ion-pair reagent (which is charged) sticks to the stationary phase. Analytes of opposite charge will then tend to be more strongly retained (opposite charges attract), while analytes of the same charge will tend to be more weakly retained (same charges repel).
-- Tom Jupille
LC Resources / Separation Science Associates
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