About: Multivalent weak electrolytes - risky background electrolytes for capillary zone electrophoresis.

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Multivalent weak acids and bases are useful components of buffers in electrophoresis. The use of such buffers as background electrolytes (BGEs) in capillary zone electrophoresis (CZE) is, however, risky due to the existence of unsafe regions in the analytical window of the separation. This contribution discusses the problems and shows that multivalent weak species in BGEs bring about the same effects as mixtures of two independent co-ions, i.e., the presence of two centers of symmetry in the electropherograms and the existence of a migrating system zone with a mobility in between these two centers of symmetry. The system zone deteriorates the analytical separation and detection of the analytes in its neighborhood. Illustrative experimental examples for both cationic and anionic CZE are shown and related discussion is given. Finally, some basic rules are formulated to avoid the preparation of risky BGEs. Multivalent weak acids and bases are useful components of buffers in electrophoresis. The use of such buffers as background electrolytes (BGEs) in capillary zone electrophoresis (CZE) is, however, risky due to the existence of unsafe regions in the analytical window of the separation. This contribution discusses the problems and shows that multivalent weak species in BGEs bring about the same effects as mixtures of two independent co-ions, i.e., the presence of two centers of symmetry in the electropherograms and the existence of a migrating system zone with a mobility in between these two centers of symmetry. The system zone deteriorates the analytical separation and detection of the analytes in its neighborhood. Illustrative experimental examples for both cationic and anionic CZE are shown and related discussion is given. Finally, some basic rules are formulated to avoid the preparation of risky BGEs. (en)
Title	Multivalent weak electrolytes - risky background electrolytes for capillary zone electrophoresis. Multivalent weak electrolytes - risky background electrolytes for capillary zone electrophoresis. (en)
skos:prefLabel	Multivalent weak electrolytes - risky background electrolytes for capillary zone electrophoresis. Multivalent weak electrolytes - risky background electrolytes for capillary zone electrophoresis. (en)
skos:notation	RIV/68081715:_____/02:25020051!RIV/2003/AV0/A25003/N
http://linked.open.../vavai/riv/strany	1942;1946
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA203/01/0401), P(GA203/02/0023), P(GA203/99/0044), P(IAA4031103), P(IAA4031703), Z(AV0Z4031919)
http://linked.open...iv/cisloPeriodika	12
http://linked.open...vai/riv/dodaniDat	2003
http://linked.open...aciTvurceVysledku	Boček, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav analytické chemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	654659
http://linked.open...ai/riv/idVysledku	RIV/68081715:_____/02:25020051
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	background electrolytes; capillary zone electrophoresis; multivalent electrolytes (en)
http://linked.open.../riv/klicoveSlovo	background electrolytes capillary zone electrophoresis multivalent electrolytes
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[1C7307D67D2B]
http://linked.open...i/riv/nazevZdroje	Electrophoresis
http://linked.open...in/vavai/riv/obor	CB
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Mapping of electrolyte systems for capillary electrophoresis The use of new analytical instrumentation in research of analytical and diagnostic methods Development of new procedures for highly reliable analytical control of technologies,materials,food &environment & for med. diagnostic using modern instrumentat ystem phenomena in analytical capillary electrophoresis Methodology of analytical electrophoresis of samples with complex matrices
http://linked.open...UplatneniVysledku	2002
http://linked.open...v/svazekPeriodika	23
http://linked.open...iv/tvurceVysledku	Boček, Petr Beckers, J. L.
http://linked.open...n/vavai/riv/zamer	Vyvinutí nových metod analytické chemie pro potřeby společenské praxe
issn	0173-0835
number of pages	5 (xsd:int)

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