Investigation by experimental design and regression models of the effect of five experimental factors on ion-interaction high-performance liquid chromatographic retention

E. Marengo, M. C. Gennaro, C. Abrigo

Research output: Contribution to journalArticlepeer-review

Abstract

The effect on retention of simazine and atrazine of five experimental factors in ion-interaction chromatography is investigated by means of chemometrics. The factors are: (1) the chainlength of the ion-interaction reagent (N), (2) the concentration of the ion-interaction reagent (CR), (3) the pH of the mobile phase, (4) the now rate (F) and (5) the organic modifier concentration (CM). Fractional and star experimental designs are employed. The effects of the factors and their interaction on retention are calculated and discussed: the results permit to draw out useful information concerning the interaction mechanisms involved. A regression model correlating the chromatographic retention to the factors, their second-order interactions and their squares with very good predictive ability (R2 > 97% and R(cv)2 > 94%) is also calculated.

Original languageEnglish
Pages (from-to)225-236
Number of pages12
JournalAnalytica Chimica Acta
Volume321
Issue number2-3
DOIs
Publication statusPublished - 20 Mar 1996
Externally publishedYes

Keywords

  • Chemometrics
  • Experimental design
  • High-performance liquid chromatography
  • Regression model

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