Contamination of agricultural soils with polychlorinated dibenzo-p-dioxines and dibenzofurans
2000
Podlesakova, E. | Vacha, R. (Vyzkumny Ustav Melioraci a Ochrany Pudy, Prague (Czech Republic)) | Nemecek, J.
We are publishing the first information concerning the polychlorinated-p-dioxines (PCDD) and dibenzofurans (PCDF) content in soils of rural areas in the Czech Republic. Because of high expenses analyses of only 20 samples were performed. In these samples 17 PCDD/F congeners and 12 PCB congeneres were determined. Samples were selected on sites with indicated loads with hazardous trace elements, PAHs and PCBs in the vicinity of industrial and combustion facilities, on flooded areas and on sites with sewage sludge disposal in comparison with clean regions. The highest PCDD/F contents and toxic equivalents (PCDD/F + PCB) 2.5 ng/kg I-TEQ were found on sites with sewage sludges disposal. Increased contents were detected in the neigbourghood of chlorine industry enterprises. No increased values were found nearby combustion facilities. A special case is the site of increased PCDD/F content in the clean area of Bohemian Forest.
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