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Levels of PCDDs, PCDFs and dioxin-like PCBs in raw cow’s milk collected in France in 2006

2007; Elsevier BV; Volume: 70; Issue: 4 Linguagem: Inglês

10.1016/j.chemosphere.2007.06.057

1879-1298

Bernard Durand, Barbara Dufour, D. Fraisse, Stéphanie Defour, Koenraad Duhem, Karine Le-Barillec,

Microbial bioremediation and biosurfactants

Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) as well as polychlorinated biphenyls (PCBs) are widespread environmental contaminants. A French national survey was carried out in April 2006 to assess the concentrations of PCDD/Fs and dioxin-like PCBs (DL-PCBs) in raw cow's milk. A random sampling scheme stratified by region was applied to collect 239 raw milk samples from 93 plants belonging to 17 dairy companies. Compared to a previous survey led in 1998 analyzing half-skimmed drinking milk in France, the PCDD/Fs level was cut by half, with an average concentration of 0.33 pg toxic equivalent (TEQ)/g fat in 2006. The mean DL-PCBs concentration was 0.57 pg TEQ/g fat and subsequently the sum of PCDD/Fs and DL-PCBs was 0.90 pg/g fat, values below the thresholds defined by the European Union regulations.