Capillary electrochromatography: operating characteristics and enantiomeric separations

Chiral separation by chromatographic and electromigration techniques. A Review

“…Several authors described the use of cyclodextrins as additives to the electrolyte in combination with achiral stationary phases, such as C18 [504], diol silica [505] or bare silica phases [506]. L. a ammerhofer and Lindner [507] resolved amino acid derivatives on an ODS-stationary phase using a quinine derivative as an ionpairing reagent in the mobile phase.…”

Transition Metal-Mediated Separation of Isomeric Pneumocandins by Capillary Electrochromatography

“…Application of at least 4 bar pressure to each mobile phase vial is recommended when these capillaries are used to prevent outgassing upon application of high voltage. The EOF was measured using thiourea as an "unretained" neutral marker [11] or from the perturbation caused from the difference of acetonitrile content between the separation electrolyte and the sample solution [12].…”

Capillary electrochromatography: A review

“…Consequently, low conductivity buffers for the analysis of biological systems such as TRIS and MES are to be recommended since they can be utilized at higher ionic strengths without contributing significantly to Ohmic heating and also permit the use of non-pressurized instrumentation. An alternative approach is that of w x Lelievre et al 90 , who have suggested that a greater percentage of organic solvent in the mobile phase could reduce bubble formation and self-heating.…”