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System Zones in Capillary Zone Electrophoresis by Jozef L. Beckers; Petr Gebauer; Petr Boček is a Engineering article available to read on EtoBox.

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## System zones in capillary zone electrophoresis This paper brings an overview of system zones (SZs) in capillary zone electrophoresis (CZE) and their effects upon the migration of zones of analytes. It is shown that the formation and migration of SZs is an inherent feature of CZE, and that it depends predominantly on the composition of an actual background electrolyte (BGE). One can distinguish between stationary SZs and migrating SZs. Stationary SZs, which move due to the electroosmotic flow only, are induced in any BGE by sample injection. Migrating SZs may be induced by a sample injection in BGEs which show at least one of the following features: (i) BGE contains two or more co-ions, (ii) BGE has low or high pH whereby H 1 or OH 2 act as the second co-ion, and (iii) BGE contains multivalent weak acids or bases. SZs do not contain any analyte and show always BGE-like composition. They contain components of the BGE only and the concentrations of these components are different from their values in the original BGE. Providing that some of the ionic components of the BGE are visible by the detector, the migrating SZs can be detected and they are present as system peaks/dips in the

Who reads System Zones in Capillary Zone Electrophoresis?

Author

Jozef L. Beckers; Petr Gebauer; Petr Boček

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 0173-0835)

Published

2001

Language

EN

Field

Engineering (Physical Sciences)