DETERMINATION OF ISOMERIC-SPECIFIC COMPOSITION OF POLYCHLORTNATED BIPHENYLS IN NATURAL AND DRINKING WATERS OF DNIEPER RIVER BASIN IN KIEV REGION USING GAS CHROMATOGRAPHY AND MASS-SPECTROMETRY

摘要

In concentrates of natural and drinking waters of Dnieper river basin in Kiev region with enrichment factor of 1,80·10~5-3,47·10~5 PCB (PCB52~4 PCB66~4, PCB101~5, PCB118~5, PCB105~5, PCB153~6, PCB138~6, PCB180~7, PCB200~8) have been identified and their isomeric-specific composition (tetrachloro- - heptachloroisomers) has been determined at MDL for total concentration of PCB at level as low as 0,19-0,38 ng/L and 0,19-0,36 ng/L calculated by the mean value in groups of pentachloro- and hexachloroisomers respectively.