Original title: Mobilization of neutral compounds by inorganic and small organic ions in capillary electrophoresis
Authors: Křížek, T. ; Martínková, E. ; Kubíčková, A. ; Hladílková, Jana ; Coufal, P. ; Heyda, J. ; Jungwirth, Pavel
Document type: Papers
Conference/Event: Moderní elektrochemické metody /36./, Jetřichovice (CZ), 20160523
Year: 2016
Language: eng
Abstract: The present study shows that neutral low-molecular-mass compounds that are presumed to possess zero electrophoretic mobility and are thus used as markers of electroosmotic flow in capillary electrophoresis can acquire electrophoretic mobility due to ion-specific interactions with constituents of background electrolyte. Therefore, these neutral markers, such as thiourea or dimethyl sulfoxide, can be separated in electric field and their migration order can vary depending on background electrolyte composition. This observation has some important implications for analytical and physico-chemical measurements using capillary electrophoresis because the choice of the marker-background electrolyte combination can influence the results of the measurement.
Keywords: capillary electrophoresis; EOF markers; ion-specific effects; mobilization
Project no.: GBP208/12/G016 (CEP)
Funding provider: GA ČR
Host item entry: XXXVI. Moderní elektrochemické metody. Sborník přednášek, ISBN 978-80-905221-4-5

Institution: Institute of Organic Chemistry and Biochemistry AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0266629

Permalink: http://www.nusl.cz/ntk/nusl-262502


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Research > Institutes ASCR > Institute of Organic Chemistry and Biochemistry
Conference materials > Papers