STRUCTURE-RETENTION CORRELATIONS OF CHLOROBENZENES AS A METHOD FOR THE COMPARISON OF THE BEHAVIOR OF GAS-LIQUID-SOLID AND GAS-LIQUID CAPILLARY COLUMNS OF VARIOUS POLARITIES

The structure-retention correlations of chlorobenzenes were investigat ed by using retention data measured on narrow-bore capillary columns: bonded-phase gas-liquid non-polar polydimethylsiloxane, polar polyglyc ol, carbon and graphite layer gas-liquid-solid modified by addition of various amount of polar liquid phase (polyglycols and terephthalic ac id). The retention values obtained in various isothermal runs (ranging from 60 to 200 degrees C) were correlated with the available physical properties data: boiling point, dipole moment, vapour pressure at the analysis temperature and the effect of the reciprocal position of the chlorine atoms on the aromatic ring was evaluated.