PREDICTION OF GAS-CHROMATOGRAPHIC RETENTION TIMES, COLUMN EFFICIENCY AND RESOLUTION AS A FUNCTION OF TEMPERATURE AND FLOW-RATE - APPLICATION FOR GAS-CHROMATOGRAPHIC SEPARATION OF 8 P-HYDROXYBENZOIC ESTERS

Using eight p-hydroxybenzoic esters, simple equations were developed t o provide accurate gas chromatographic retention data and column effic iency represented by the height equivalent to a theoretical plate. Wit h an experimental design, these equations have practical applications in the calculation of the resolution for a given pair of these compoun ds and for the determination of the isothermal conditions for their se paration in minimum time. The method reduced the number of experiments to be carried out and provided good agreement between experimental re sults and predicted data.