Electrochemical methods in conjunction with capillary and microchip electrophoresis

Mark, Jonas J. P. and Scholz, Rebekka and Matysik, Frank-Michael (2012) Electrochemical methods in conjunction with capillary and microchip electrophoresis. JOURNAL OF CHROMATOGRAPHY A, 1267. pp. 45-64. ISSN 0021-9673, 1873-3778

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Abstract

Electromigrative techniques such as capillary and microchip electrophoresis (CE and MCE) are inherently associated with various electrochemical phenomena. The electrolytic processes occurring in the buffer reservoirs have to be considered fora proper design of miniaturized electrophoretic systems and a suitable selection of buffer composition. In addition, the control of the electroosmotic flow plays a crucial role for the optimization of CE/MCE separations. Electroanalytical methods have significant importance in the field of detection in conjunction with CE/MCE. At present, amperometric detection and contactless conductivity detection are the predominating electrochemical detection methods for CE/MCE. This paper reviews the most recent trends in the field of electrochemical detection coupled to CE/MCE. The emphasis is on methodical developments and new applications that have been published over the past five years. A rather new way for the implementation of electrochemical methods into CE systems is the concept of electrochemically assisted injection which involves the electrochemical conversions of analytes during the injection step. This approach is particularly attractive in hyphenation to mass spectrometry (MS) as it widens the range of CE-MS applications. An overview of recent developments of electrochemically assisted injection coupled to CE is presented. (C) 2012 Elsevier B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: CONTACTLESS CONDUCTIVITY DETECTION; INDIRECT AMPEROMETRIC DETECTION; IONIZATION MASS-SPECTROMETRY; ZONE-ELECTROPHORESIS; AMINO-ACIDS; CARBON NANOTUBES; ELECTROMEMBRANE EXTRACTION; ISOLATED POTENTIOSTAT; MICROFLUIDIC DEVICE; COMPOSITE ELECTRODE; Amperometric detection; Capillary electrophoresis; Contactless conductivity detection; Electrochemical methods; Electrochemically assisted injection; Hyphenated methods; Mass spectrometry; Microchip electrophoresis
Subjects: 500 Science > 540 Chemistry & allied sciences
Divisions: Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik > Instrumentelle Analytik (Prof. Frank-Michael Matysik)
Depositing User: Petra Gürster
Date Deposited: 27 May 2020 06:18
Last Modified: 27 May 2020 06:18
URI: https://pred.uni-regensburg.de/id/eprint/17606

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