Influence of Van der Waals' volume of ethers,esters, carbonyls and alcohols on retention in gas chromatography stationary phases of different polyrity

Summary Equations for Retention Index (I) versus Van der Waals, volume (V_w) on squalane are studied for alcohols, carbonyls, esters and ethers. Each equation includes linear and branching substances with different positions of the functional group in the carbon chain. The study is extended to stationary phases with polarities from 4.29 to 91.54 on the Tarjan et al. scale. Variations of the slope and origin ordinate values with the polarity of the stationary phase are discussed.