alexa Chemometric approach to the treatment of benzodiazepine separation and peak broadening in capillary electrophoresis.
Pharmaceutical Sciences

Pharmaceutical Sciences

Pharmaceutica Analytica Acta

Author(s): Peyrin E, Guillaume YC

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Abstract A chemometric methodology was used to study capillary efficiency and the separation of ten benzodiazepines in capillary electrophoresis. The resolution between two adjacent peaks on the electropherogram was estimated and the overall quality of the separation was assessed by means of a new response function. The nature (methanol or acetonitrile) and proportion of the organic modifier both in the background electrolyte and the sample buffer and the injection time were considered. The results predicted that if the sample had a lower dielectric constant than the background electrolyte buffer then a much larger injection volume could be used. The computer optimization routine was experimentally validated and the result demonstrated that the fastest electrophoretic reparation was obtained with acetonitrile (7 min instead of 9 min with methanol).
This article was published in J Chromatogr A and referenced in Pharmaceutica Analytica Acta

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