Summary
Plackett-Burman experimental design has been studied in the chiral separation of clenbuterol using capillary electrophoresis (CE). This saturated fractional design approach was used to simultaneously investigate the variables pH, cyclodextrin concentration, electrolyte ionic strength, methanol concentration, and injection time, each at three levels. Percentage main effects of each variable on resolution, retention time and peak efficiency were calculated. Ionic strength, pH and β-cyclodextrin concentration were found to exert the greatest effect on resolution, pH on retention time and pH and ionic strength on peak efficiency. Results are in agreement with those from a previous univariate study. It is concluded that Plackett-Burman experimental design offers of rapid means for testing robustness of chiral CE methods or for the simultaneous screening of experimental variables.
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Rogan, M.M., Altria, K.D. & Goodall, D.M. Plackett-Burman experimental design in chiral analysis using capillary electrophoresis. Chromatographia 38, 723–729 (1994). https://doi.org/10.1007/BF02269627
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DOI: https://doi.org/10.1007/BF02269627