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Titolo:
Separation of anilines by capillary electrophoresis with small ionic compounds as buffer additives
Autore:
Li, J; Fritz, JS;
Indirizzi:
US DOE, Ames Lab, Ames, IA 50011 USA US DOE Ames IA USA 50011US DOE, Ames Lab, Ames, IA 50011 USA Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA Iowa State Univ Sci & Technol Ames IA USA 50011 Chem, Ames, IA 50011 USA
Titolo Testata:
JOURNAL OF CHROMATOGRAPHY A
fascicolo: 2, volume: 840, anno: 1999,
pagine: 269 - 279
Fonte:
ISI
Lingua:
ENG
Soggetto:
MICELLAR ELECTROKINETIC CHROMATOGRAPHY; FUSED-SILICA CAPILLARIES; BETA-CYCLODEXTRIN; SUBSTITUTED ANILINES; ZONE ELECTROPHORESIS; MIGRATION BEHAVIOR; BASIC-PROTEINS; MOBILE PHASE; LOW PH; CHLOROANILINES;
Keywords:
background electrolyte composition; anilines;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Fritz, JS US DOE, Ames Lab, Ames, IA 50011 USA US DOE Ames IA USA 50011US DOE, Ames Lab, Ames, IA 50011 USA
Citazione:
J. Li e J.S. Fritz, "Separation of anilines by capillary electrophoresis with small ionic compounds as buffer additives", J CHROMAT A, 840(2), 1999, pp. 269-279

Abstract

Addition of either ethanesulfonic acid or protonated triethylamine to the background electrolyte was found to markedly improve the separation of protonated anilines by capillary electrophoresis. These additives appear to form a thin coating on the capillary surface via a dynamic equilibrium. This results in a change in electroosmotic flow and reduces interactions of the sample cations with the silica surface. A mixture of 10 substituted anilinescould be separated, including several positional isomers. Migration times of the sample cations were reproducible with a RSD less than 1.0%. (C) 1999Elsevier Science B.V. All rights reserved.

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Documento generato il 24/10/20 alle ore 11:42:03