Biological monitoring of organochlorine pesticides using Anodontites trapesialis (Lam, 1819), (Bivalvia: Mycetopodidae) in a lotic environment-urban sewage

The contribution of domestic and industrial waste to the discharge of organochlorine compounds into the Pardo river, the major body of water in the northeast region of the state of São Paulo, was studied through the biological monitoring of the limnal bivalve anodontites trapesialis. The method used was gas-phase chromatography using a CG 35370 chromatograph. The results showed the abscense of organochlorine pesticide waste from the urban sewage of the city of Ribeirão Preto.