Experimental and Theoretical Study of Specific Retention Volumes in Mixtures of Polar and Nonpolar Stationary Liquids

Abstract

Specific retention volumes, V$$ of monofunctional organic solutes have been measured in 1 -dodecanol, lauronitrile, ranges of mixtures of each of these with squalane, and squalane. Results are presented as plots of Vg against the weight fraction of hydroxyl group or nitrile group in the solvent. V0's of alkane solutes decrease slowly with increase in weight fraction of polar group. In 1 -dodecanol and its mixtures, alkanol solutes give steeply rising linear plots, and other polar solutes give curves concave to the abscissa. The plots for ethers and halogenates show maxima in Vg. In lauronitrile and its mixtures, nitrile and nitro- solutes give steeply rising linear plots, and other polar solutes give curves concave to the abscissa. These results are correlated with a theory in which it is assumed that solutes and solvents interact in solution to form complexes in a manner obeying the Law of Mass Action. rocedures for semi-empirical calculation of specific retention volumes based on this theory are implicit. © 1966, American Chemical Society. All rights reserved.