Extraction of selected pollutants in open tubular capillary columns

摘要

Extraction of selected phenol acetly derivatives and polycyclic aromatic hyirocarbons in open tubular capillary colunms was studied.It was found that open tubular extraction enables to extract phenols in 10 sorptive cycles with yields similar to those obtained in equilibrium solvent extraction.The sorptive properties of the stationary phase can be modified by the use of various solvents.The positive effect of toluene used as a swelling agent is sepecially strong for nitrophenols.Using the Abraham model,distribution coefficients are well correlated with the polluatant parameters.The hydrophobicity of the pollutants measured by the molar volume or octanol-water distribution coefficient,is the most important factor affecting extraction in open tubular exdtraction.The signs of other regreesion coeffcients reflect well the effeft of the stationary phase polarity.