title: Specific background electrolytes for nonaqueous capillary electrophoresis.
abstract: The use of organic solvents or mixture of solvents in capillary electrophoresis is gaining wider attention. The electroosmotic flow mobility of eight organic solvents (acetonitrile, acetone, dimethylformamide, dimetylsulphoxide, propylene carbonate, methanol, ethanol, n-propanol) and of mixtures of several solvents (methanol-acetonitrile, methanol-propylene carbonate, acetonitrile-propylene carbonate) has been studied. The influence of 1,3-alkylimidazolium salts in different solvents on the separation of different analytes has been investigated. Some of these salts have shown usefulness for matrix-assisted laser desorption ionization matrices and off-line analysis of electrophoresis fractions. It also appears that nonaqueous capillary electrophoresis with 1,3-alkylimidazolium salts as background electrolytes is suitable for separation small inorganic ions.
authors.affiliation: Department of Chemistry, Tallinn University of Technology, Ehitajate 5, 19086 Tallinn, Estonia. merike@chemnet.ee
authors.forename: Merike
authors.initials: M
authors.lastname: Vaher
authors.forename: Mihkel
authors.initials: M
authors.lastname: Koel
mesh_terms: D004573:Electrolytes / Q000737:chemistry*; D019075:Electrophoresis, Capillary / Q000379:methods*; D012492:Salts / Q000737:chemistry; D012680:Sensitivity and Specificity; D012997:Solvents / Q000737:chemistry; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
chemical_list: D004573:Electrolytes; D012492:Salts; D012997:Solvents