Influence of sample plug width in capillary electrochromatography

Capillary electrochromatography (CEC) is a highly efficient miniaturized chromatographic technique that is very sensitive to extra-column band broadening effects. It is investigated whether band broadening due to the sample injection process is within a tolerable range for the standard sample inject...

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Bibliographic Details
Published in:Journal of Chromatography A 1997-08, Vol.779 (1), p.155-163
Main Authors: Pyell, U., Rebscher, H., Banholczer, A.
Format: Article
Language:English
Subjects:
Analytical chemistry
Band broadening
Benzoates
Chemistry
Chromatographic methods and physical methods associated with chromatography
Computer simulation
Electrochromatography
Exact sciences and technology
Injection parameters
Other chromatographic methods
Polynuclear aromatic hydrocarbons
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Description
Summary:Capillary electrochromatography (CEC) is a highly efficient miniaturized chromatographic technique that is very sensitive to extra-column band broadening effects. It is investigated whether band broadening due to the sample injection process is within a tolerable range for the standard sample injection procedures usually employed in CEC. Equations are derived that permit the user of CEC to calculate optimum injection parameters. These equations operate with magnitudes easily accessible in CEC (dimensions of column, plate number and electroosmotic mobility).
ISSN:0021-9673
DOI:10.1016/S0021-9673(97)00398-1