|Document ID (ISN)||107745|
|ISSN - Serial title
||1877-7856 - Encyclopédie médico-chirurgicale
|Convention or series no.
||Halogenated polycyclic aromatic hydrocarbons
||Hydrocarbures aromatiques polycycliques halogénés [in French]|
||Toxicologie-Pathologie professionnelle, 4th Quarter 2006, No.153, 7p. Illus. 60 ref.
||2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) or "Seveso dioxin" is the most toxic of all halogenated polycyclic aromatic hydrocarbons. Dioxins, together with similar families of products including polychlorodibenzofuranes (PCDFs) and polychlorobiphenyls (PCBs) have been grouped together to yield a single numerical value called the "toxic equivalent quantity" (TEQ) to characterize the potential toxicity of any environment where these congeneric substances are found. Non-carcinogenic effects are very diverse, the most reported and specific appearing at high doses. TCDD has been classified as a carcinogenic to humans in 1997. All persons are exposed daily to very low doses of dioxins, essentially through the ingestion of food. The form of the dose-response relationship for cancer remains uncertain. Several chemical industry worker cohort studies have yielded information allowing the modelling of the relationship, but the findings remain open to various interpretations.
||France; polychlorinated biphenyls; toxicology; dioxins; chlorinated dibenzofurans
||toxic effects; criteria document; mutagens; antifertility effects; carcinogens; routes of entry; IARC; tetrachlorodibenzodioxin; epidemiology; toxic substances; hazard evaluation; animal experiments; in vitro experiments; dose-response relationship; encyclopaedia; data sheet; literature survey
||F - Information notes, codes of practice, standards
|Country / State or Province||France|
||Toxic and dangerous substances
|Broad subject area(s)
||Genetic factors in reaction to exposures