Abstract
Abstract The separation and indirect visible detection of rare earth metal cations on a dye-coated stationary phase was studied. Phenol Red, which is typically used for pH titrations, was used as an ion-interaction reagent in this study and is composed of a hydrophobic group and a fixed charge site. The mobile phase variables that were found to affect metal cation retention and resolution are: concentration of dye, concentration of organic modifier, mobile-phase pH, type and concentration of ligand, and ionic strength. A polymer-based stationary phase was used in this study and detection of the metal cations was accomplished by indirect visible detection at 490 nm.
Published Version
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