Abstract
Seven chromatographic grade solvents miscible with water (acetone, acetonitrile, dioxane, ethanol, isopropanol, methanol, tetrahydrofuran), as well as water itself were investigated in the context of their eluotropic strength in reversed-phase chromatography on four medium-polar adsorbents (cellulose, CN, NH2 and DIOL). The test set for this research consisted of 35 model compounds. A modern chemometric mixture design concept allowed to estimate each solvent effect separately with a relatively small error (about 0.05 of RM value for all adsorbents). The solvent effects were analyzed chemometrically in multivariate manner and a final model was fitted to achieve the solvent strength. The estimation error was computed both from regression and bootstrap approach.
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