title: Dynamics of hexachlorobenzene residues in the food chain.
abstract: Epidemiological studies of food contamination in an area of intensive agriculture for the years 1975-1983 showed that hexachlorobenzene (HCB) was present in all food-chain links, although HCB has not been used in Czechoslovakian agriculture since 1980. Samples of potatoes, wheat, milk fat, eggs, meat and human milk were analysed by gas-liquid chromatography with electron-capture detector. Levels of HCB residues ranged from 0.02 (potatoes) to 2.5 mg/kg (human milk, fat basis). A study of HCB accumulation in eggs from a poultry experiment showed that HCB levels in eggs can reach about twice the level given in feed at 7-10 weeks.
mesh_terms: D000818:Animals; D002722:Chlorobenzenes / Q000032:analysis*; D004531:Eggs / Q000032:analysis; D005506:Food Contamination; D006581:Hexachlorobenzene / Q000032:analysis*; D006801:Humans; D008892:Milk / Q000032:analysis; D010573:Pesticide Residues / Q000032:analysis*
chemical_list: D002722:Chlorobenzenes; D010573:Pesticide Residues; D006581:Hexachlorobenzene