Electrokinetic injection in capillary electrophoresis and its application to the analysis of inorganic compounds

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Abstract

In capillary electrophoresis, electrokinetic injection is a highly controversial sampling technique. It is a simple mode of sample introduction which is suitable for on-line preconcentration of the analytes, but its precision and accuracy are more strongly affected by experimental conditions compared to hydrodynamic injection. In the first part of this paper the features of electrokinetic and hydrodynamic injections are compared, followed by a detailed discussion on the different biases of electrokinetic injection and on how to reduce them. Finally, applications of the electrokinetic injection are reviewed with special emphasis on the analysis of inorganic compounds. Copyright (C) 1999 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)21-44
Number of pages24
JournalJournal of Chromatography A
Volume834
Issue number1-2
DOIs
Publication statusPublished - Feb 26 1999

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Inorganic compounds
Capillary electrophoresis
Capillary Electrophoresis
Hydrodynamics
Injections
Sampling

Keywords

  • Capillary electrophoresis
  • Electrokinetic injection
  • Hydrodynamic injection
  • Injection methods
  • Inorganic anions
  • Inorganic cations
  • Reviews

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

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abstract = "In capillary electrophoresis, electrokinetic injection is a highly controversial sampling technique. It is a simple mode of sample introduction which is suitable for on-line preconcentration of the analytes, but its precision and accuracy are more strongly affected by experimental conditions compared to hydrodynamic injection. In the first part of this paper the features of electrokinetic and hydrodynamic injections are compared, followed by a detailed discussion on the different biases of electrokinetic injection and on how to reduce them. Finally, applications of the electrokinetic injection are reviewed with special emphasis on the analysis of inorganic compounds. Copyright (C) 1999 Elsevier Science B.V.",
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AU - Krivácsy, Z.

AU - Gelencsér, A.

AU - Hlavay, J.

AU - Kiss, G.

AU - Sárvári, Zsolt

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AB - In capillary electrophoresis, electrokinetic injection is a highly controversial sampling technique. It is a simple mode of sample introduction which is suitable for on-line preconcentration of the analytes, but its precision and accuracy are more strongly affected by experimental conditions compared to hydrodynamic injection. In the first part of this paper the features of electrokinetic and hydrodynamic injections are compared, followed by a detailed discussion on the different biases of electrokinetic injection and on how to reduce them. Finally, applications of the electrokinetic injection are reviewed with special emphasis on the analysis of inorganic compounds. Copyright (C) 1999 Elsevier Science B.V.

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