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Regular properties of simple electrophoretic BGEs with multiprotic weak acids: Discovery of complex hybrid system boundaries
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SYSNO ASEP 0305451 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Regular properties of simple electrophoretic BGEs with multiprotic weak acids: Discovery of complex hybrid system boundaries Title Vlastnosti jednoduchých elektroforetických základních elektrolytů s vícesytnými kyselinami: objev komplexních hybridních systémových rozhraní Author(s) Gebauer, Petr (UIACH-O) RID, ORCID
Malá, Zdeňka (UIACH-O) RID
Šlampová, Andrea (UIACH-O) RID
Boček, Petr (UIACH-O) RIDSource Title Electrophoresis. - : Wiley - ISSN 0173-0835
Roč. 29, č. 5 (2008), s. 1067-1076Number of pages 10 s. Language eng - English Country DE - Germany Keywords electrophoresis ; hybrid boundaries ; multivalent weak electrolytes Subject RIV CB - Analytical Chemistry, Separation R&D Projects GA203/05/2106 GA ČR - Czech Science Foundation (CSF) IAA400310609 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) IAA400310703 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z40310501 - UIACH-O (2005-2011) Annotation In electrophoresis, front and rear boundaries of system zones evolve during electromigration in the same way as analyte zones and show sharp (S), dispersed (D) and/or hybrid character. Results of theoretical and experimental investigation of system properties of very simple BGEs formed by one weak polyprotic acid and one weak or strong base show that system boundaries of the hybrid type occur even in such simple systems. Theory reveals that, e.g., the very common phosphate buffer system (formed by phosphoric acid and a strong cation) may exhibit very unusual complex nonlinearity of the EMD velocity curve showing three turns. Such nonlinearity leads to the formation of complex hybrid boundaries having D-S-D, S-D-S, or even S-D-S-D or D-S-D-S concentration profile types that have not been reported so far. Workplace Institute of Analytical Chemistry Contact Iveta Drobníková, drobnikova@iach.cz, Tel.: 532 290 234 Year of Publishing 2008
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