Abstract
Samples of several foods for sale in São Paulo, S.P., Brazíl, such as rice, beans, potatoes, eggs and vegetables have been examined by means of the gas liquid chromatography method, with electron capture detector, in order to determine the chlorinated pesticide residues. Hexachlorocyclohexane (BHCl alfa, beta and gama isomers were found in ali the samples analysed. DDT was found in only few samples of the grains and vegetables. Other organochlorinated pesticides residues have not been found. These results as well those of our previous surveys allowed us to calculate that the daíly intake of BHC by the population, according to a certain diet, isO,0004 mg/kg body wt/day. More than half of the daily intake is accounted for by foods of animal origino The
problem of remanescence of pesticides in foods ín São Paulo differs from that found in European countries and in U.S.A., where the major contamination is due to DDT.
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