Abstract
Results of determination of polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDF) in blood of a group of 10 persons with no declared exposure are presented. Each of the collected 40-ml blood samples was diluted with water, partitioned on Chem-Elut (modified Silicagel) and eluted with hexane / isopropanol. After evaporation and weight determination, the residue was subjected to a multicolumn system clean-up involving carbon on glass fibre. The final extract was dissolved in 10 μl toluene and analysed with HRGC/MS. The detection limit for 2.3.7.8-Tetra-CDD was normally 1 - 2 pg/g blood lipid. The levels measured are discussed and compared with the results of similar investigations in Germany.
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