ABSTRACT
This monitoring study of 355 samples of cow's milk collected from the central region of Veracruz state and 448 samples of national butter brands was conducted to determine the contamination levels of organochlorine pesticides. The results obtained for mean HCH levels were 0.094 and 0.093 mg/kg on fat basis in cow's milk and butter samples, respectively. The mean DDT levels were 0.159 and 0.049 mg/kg, respectively. In relation to cow's milk, the total HCH levels in Veracruz state were higher but total DDT levels were comparable to those reported in other countries. On the other hand, organochlorine levels detected in national brand butter samples were lower than those found in other countries, where these pesticides are still used in sanitary actions. These results confirmed that dairy products in Mexico presented organochlorine pesticide residues (owing to their use in sanitary actions) indicating a human exposure through these food products.
Subject(s)
Butter , Environmental Exposure , Food Contamination , Hydrocarbons, Chlorinated , Insecticides/analysis , Milk/chemistry , Agriculture , Animals , Cattle , Environmental Monitoring , Humans , Insecticides/pharmacokinetics , MexicoSubject(s)
Hydrocarbons, Chlorinated , Insecticides/analysis , Milk, Human/chemistry , Pesticide Residues/analysis , Adolescent , Adult , Body Burden , Chromatography, Gas , Cohort Studies , Environmental Exposure , Female , Humans , Insecticides/metabolism , Mexico , Parity , Pesticide Residues/metabolism , Quality Control , Reference Standards , Regression Analysis , Surveys and Questionnaires , Tropical ClimateABSTRACT
Organochlorine pesticide residues were analyzed in 345 samples of butter purchased from Mexican supermarkets in 1994. Three national brands and one foreign brand were analyzed. Most samples contained residues of gama-HCH (91%), HCB (90%), and p,p'-DDE (88%). Residues of alpha-HCH (63%), p,p'-DDT (42%), beta-HCH (38%), o,p'-DDT (17%), heptachlor epoxide (7%), and endosulfane sulfate (3%) were also detected. Mean values of pesticide residues determined were 0.093 mg/kg fat for total HCH and 0.056 mg/kg for total DDT. Mean values of organochlorine pesticide residues in Mexican butter were comparable with those in a foreign brand.
Subject(s)
Butter/analysis , Hydrocarbons, Chlorinated , Insecticides/analysis , Pesticide Residues/analysis , MexicoABSTRACT
Concentrations of organochlorine insecticide residues such as DDT, DDE, gamma- and beta-HCH were determined in human adipose tissue samples obtained during autopsies from urban and suburban areas of Veracruz city, the state of Veracruz and out-of-state areas, collected during 1988 and 1991. The mean levels of total DDT, which constitutes the predominant accumulated pesticide, decreased from 17.45 mg/kg in 1988 to 14.06 mg/kg in 1991. The highest levels of total DDT were determined in persons from suburban areas of Veracruz city and among persons over 51 years old with the highest levels of contamination observed in patients dying of cardiovascular disorders.
Subject(s)
Adipose Tissue/chemistry , Hydrocarbons, Chlorinated , Insecticides/analysis , Pesticide Residues/analysis , Adolescent , Adult , Child , Child, Preschool , Environmental Exposure , Female , Humans , Infant , Insecticides/metabolism , Male , Mexico , Middle Aged , Random Allocation , Suburban Population , Urban PopulationABSTRACT
This monitoring study of 192 samples of cow's milk collected from the central region of Veracruz state was conducted to determine the contamination levels of organochlorine pesticides. The results obtained for mean DDT and HCH levels were 0.057 and 0.098 mg/kg respectively expressed on fat basis and are within FAO tolerances and similar to those found in other tropical countries.
