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Open Access Green as soon as Postprint is submitted to ZB.
Up-scaling capillary zone electrophoresis separations of polydisperse anionic polyelectrolytes with preparative free-flow electrophoresis exemplified with a soil fulvic acid.
Electrophoresis 23, 2872-2879 (2002)
A scale-up of analytical capillary zone electrophoresis (CZE) to preparative free-flow electrophoresis (FFE) is described. FFE allows fractionations based on charge densities in larger amounts than in CZE, enabling further off-line analysis of the fractions. Model compounds (carboxylic acids and polystyrene sulfonates) showed a similar behavior in FFE as in CZE. Diffusion and electrodynamic distortion effects are more pronounced in FFE than in CZE. A soil fulvic acid was analyzed by CZE and fractionated by FFE. A comparison of the FFE fractions with CZE measurements of the same sample using the effective mobility scale showed good agreement of the two methods.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Capillary zone electrophoresis; Charge density; Effective mobility; Free-flow electrophoresis; Fulvic acid; Humic substance
ISSN (print) / ISBN
0173-0835
e-ISSN
1522-2683
Journal
Electrophoresis
Quellenangaben
Volume: 23,
Issue: 17,
Pages: 2872-2879
Publisher
Wiley
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Soil Ecology (IBOE)
Institute of Ecological Chemistry (IOEC)
Institute of Ecological Chemistry (IOEC)