DETERMINATION OF PCB IN WATER USING MICROEXTRACTION AND CAPILLARY GAS CHROMATOGRAPHY

Abstract

Capillary gas chromatography and FID detector were used in the study of the recoveries of PCB microextraction of the Delor 103 mixture and selected congeners of PCB (8, 28, 52, 101, 118, 138, 153, 180, 203) from 1 litre of water (at 7 °C) into hexane and toluene (1 ml) by vigorous mechanical shaking for 5 minutes. The recoveries of PCB from the Delor 103 microextraction (at concentrations from 0.01 to 10 g/l H₂0) related to the internal standard 1,2,3,4-tetrachlornaphtalene (recovery = 100%) were above 60%. The similar results were obtained also in the case of the individual PCB congeners. The PCB recovery is influenced with number of chlorine atoms in biphenyl, concentration of the individual congeners in the mixture Delor 103 and their solubility in water. The results of recoveries showed, that the method described above can be used for the purposes of the routine PCB analysis in waters.