Investigation and interpretation of band broadening in size exclusion chromatography

Study of Band Broadening occurring in Size Exclusion Chromatography (SEC) is reported using very narrow PS standards obtained and characterised by Temperature Gradient Interaction Chromatography (TGIC). Chromatograms are fitted by Exponentially Modified Gaussian functions (EMG) and mapping of band b...

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Bibliographic Details
Published in:Journal of Chromatography A 2001-09, Vol.930 (1), p.61-71
Main Authors: Busnel, J.P., Foucault, F., Denis, L., Lee, W., Chang, T.
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Chromatographic methods and physical methods associated with chromatography
Chromatography, Gel - methods
Exact sciences and technology
Models, Chemical
Other chromatographic methods
Spectrophotometry, Ultraviolet
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Summary:Study of Band Broadening occurring in Size Exclusion Chromatography (SEC) is reported using very narrow PS standards obtained and characterised by Temperature Gradient Interaction Chromatography (TGIC). Chromatograms are fitted by Exponentially Modified Gaussian functions (EMG) and mapping of band broadening is obtained for different column sets. Interpretation of the skewing of the chromatograms is proposed with a new model using Brownian motion properties inside the pores. That explains why band broadening and tailing become so important near total exclusion volume.
ISSN:0021-9673
DOI:10.1016/S0021-9673(01)01159-1