Foodstuffs berries

Bioavailability from Environmental Media. No information on the presence of 3,3 -dichloro-benzidine in foods was located in the available literature. The Canadian Government s Priority Substances List Assessment Report for 3,3 -dichlorobenzidine (Government of Canada 1993) also reports that no data on the levels of 3,3 -dichlorobenzidine in drinking water or foodstuffs were identified within either Canada or the United States. Because 3,3 -dichlorobenzidine has been found to bind strongly to soil constituents (Berry and Boyd 1985 Chung and Boyd 1987), Law (1995) concluded that it would also bind strongly to sedimentary material in the marine aquatic environment and thus may have limited bioavailability. 

The mean iodine concentration in other foodstuffs, e.g., meat and meat products, bread and cereals, vegetables, potatoes, fruits and berries, and fats and oils, is 2—3pg/100g and their contribution of iodine to total iodine intake are assumed to be limited (Dahl et al., 2004). As a consequence of the high iodine concenttation in eggs, eggs are of equal importance to total iodine intake as the sum of bread, cereals, vegetables and fruits. 

In certain rural portions of Russia receiving Chernobyl contamination on April 28-29, 1986, Cs concentrations in the human body in 1986-87 were positively correlated with consumption of meat and dairy products. Domestic livestock were fed clean feed as much as possible for milk production, and were fed clean feed for 40-120 days before slaughter. Beginning in 1993, however, and persisting to at least 1996, the content of Cs in whole humans correlated positively with the levels of consumption of naturally occurring foodstuffs, such as mushrooms, wild berries, fish, and game. 

The set of data that are regularly obtained on radionuclide concentrations in locally produced agricultural foodstuffs can be used directly to assess the annual intake and the associated committed dose. In regions where the inhabitants normally consume substantial amounts of natural food products (e.g. game, freshwater fish, forest mushrooms and berries) with elevated radionuclide concentrations, available data from measurements should also be used for the estimation of intakes of radionuclides. 

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