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We discuss the effect of electrolytes on retention of aqueous colloidal polystyrene particles in asymmetrical flow (AF‐FFF) and thermal field‐flow fractionation (ThFFF). In both FFF subtechniques, interparticle interaction leads to non‐ideal fractionation behavior, which can result in a sample load dependency. Electrostatic repulsion is reduced with increasing electrolyte concentration, resulting...
In this study, the retention of colloidal polystyrene beads in aqueous dispersion in thermal field-flow fractionation (ThFFF) is investigated as function of various types and concentrations of electrolytes in the carrier liquid. A specific ion effect is observed and can be interpreted in terms of Hofmeister series. Addition of salt composed of chaotropic anions to the carrier liquid increases particle...
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