Dioxins in food chain
نویسندگان
چکیده
polychlorinated dibenzo-p-dioxins (PCDD), whereas 135 congeners belong to the group of polychlorinated dibenzofurans (PCDF). Figure 1 shows general structures of PCCD and PCDF. Dioxins are widespread contaminants with no specific usage and they are not produced. They mostly appear as unwanted byproducts of different industrial processes, combustion in waste incineration, and in the production of certain chemicals (e.g. organochlorine pesticides and herbicides). Forest fires and volcanic eruptions are also a source of dioxins. Waste incineration is considered to be the highest causative agent of environmental contamination. Dioxins have hydrophobic character, and they are well soluble in fats. Since they are not watersoluble, they bind to sediment and organic matter in the environment. Dioxins are very stabile and resistant to chemical and microbiological degradation which makes them very stabile in the envi-
منابع مشابه
Dioxins in the Food Chain: Background
● Summary ● Introduction ● What are the major sources of dioxin and related compounds in the human diet? ● How do food animals become contaminated with dioxin and related compounds? ● How can dioxin contamination in food animals be decreased? ● Have there been any serious incidents of contamination of food products with dioxins above background levels recently? ● What activities involving dioxi...
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