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Analytical exclusion chromatography.
1Department of Biochemistry, School of Molecular and Microbial Sciences, University of Queensland, Brisbane, Queensland 4072, Australia. d.winzor@mailbox.uq.edu.au
Journal of Biochemical and Biophysical Methods
|July 2, 2003
Summary
Exclusion chromatography, also known as gel filtration, is a versatile technique for characterizing solutes and their interactions. It determines molecular mass and interactions, offering flexibility in solute size and concentration studies.
Area of Science:
- Biochemistry
- Analytical Chemistry
- Separation Science
Background:
- Exclusion chromatography, encompassing gel filtration, molecular-sieve, and gel permeation chromatography, is a key separation technique.
- Its utility extends beyond purification to quantitative characterization of solutes and their interactions.
Purpose of the Study:
- To review the development and applications of exclusion chromatography for quantitative solute characterization.
- To highlight its capability in determining molecular mass, distribution, and interaction parameters.
Main Methods:
- Utilizes molecular-sieve media with varying porosities for size-based separation.
- Employs diverse assay procedures for monitoring column eluates.
Main Results:
- Enables precise determination of molecular mass and molecular mass distribution.
- Facilitates characterization of solute self-association and solute-ligand interactions (stoichiometry, equilibrium constant).
- Offers a broad dynamic range for solute concentration analysis.
Conclusions:
- Exclusion chromatography is a powerful tool for both separation/purification and in-depth functional analysis of solutes.
- Its adaptability in media and detection methods provides significant analytical flexibility.