ABSTRACT
The mussel Anodontites trapesialis (Lam, 1819) was used as an indicator of organochloride pollutans in the Canoas River, located in the municpality of Mococa (21-25'08"S and 47W), State of Säo Paulo, Brazil. Biological monitoring was performed for one year at the site of an orange grove on the left bank of the river. Forty-five animals were placed in aluminum enclosures on the river bottom at this site and 4 animals were sacrificed for pesticide analysis at 3-month intevals, each corrsponding to one season of the year. Pesticides were extracted by the method of Bedford et al., (1968), modified, and the analyses were performed bay gas phase chromatography equipped with an elelctron capture detector. The aninals were found to have been exposed to DDT. Lindane and Heptachlor. Variation in Aldrin and Dieldrin levels was not significant enough to permit inferences. Endrin was not detected in any of the analyses
Subject(s)
Animals , Environmental Monitoring , Insecticides, Organochlorine/analysis , Bivalvia/chemistry , Pesticide Residues/analysis , BrazilABSTRACT
Analisam-se amostras de leite humano de sete trabalhadoras rurais do município de Jaboticabal, Säo Paulo. Identificaram-se traços de lindane em três amostras e níveis bastantes baixos de heptacloro, que näo excederam 0,001 mg/kg. Constataram-se DDT total em 100% das amostras, com níveis variando entre 0,008 a 0,455 mg/kg. Níveis de p.p'-DDT foram mais elevados do que os de p.p'-DDE, em todas as amostras, demonstrando uma exposiçäo recente ao DDT.
Subject(s)
Humans , Female , DDT , Dichlorodiphenyl Dichloroethylene , Milk, Human/analysis , Pesticides/analysis , Rural Workers , /methods , BrazilABSTRACT
Estudo realizado em lactante com comprovada exposiçäo ocupacional, mostrando a queda dos níveis de DDT total desde o início da amamentaçäo até o retorno às suas atividades, quando se constatou elevaçäo, principalmente do p,p'-DDT, indicando uma contaminaçäo recente a essas susbstâncias