Levels of organochlorine pesticides in Amazon turtle (Podocnemis unifilis) in the Xingu River, Brazil
Pignati, Marina Teófilo
Souza, Larissa Costa de
Mendes, Rosivaldo de Alcântara
Lima, Marcelo de Oliveira
Pignati, Wanderlei Antonio
Pezzuti, Juarez Carlos Brito
Due to the toxicity and high environmental persistence of organochlorine pesticides in aquatic organisms, turtles have been studied as environment biomonitors. These animals are important sources of protein for the riverside and indigenous peoples of the Brazilian amazon. In the present study, organochlorine pesticide contamination was investigated in Podocnemis unifilis. Liver, muscle and fatty tissue samples were removed from 50 specimens collected from five sampling points located in the Xingu River basin. Fourteen organochlorine pesticides were analysed via gas chromatography with an electron capture detector (CG-ECD). Eight organochlorine pesticides were detected with average concentrations of ∑DDT, ∑Endossulfan and ∑HCH which were 26.17 ± 26.35, 14.38 ± 23.77 and 1.39 ± 8.46 ng g−1 in moisture content, respectively. DDT compounds were the most predominant, with a greater concentration of pp′-DDT in the liver and pp′-DDD in the muscle. Significant differences were noted between the types of tissues studied, and the concentration of OCPs varied between sampling sites.
xmlui.dri2xhtml.METS-1.0.item-citationPIGNATI, Marina Teófilo et al. Levels of organochlorine pesticides in Amazon turtle (Podocnemis unifilis) in the Xingu River, Brazil. Journal of Environmental Science and Health, Part B : Pesticides, Food Contaminants, and Agricultural Wastes, v. xx, n. xx, p. xx, Sept. 2018. Epub ahead of print.
xmlui.dri2xhtml.METS-1.0.item-decsPrimaryPraguicidas / toxicidade
Inseticidas Organoclorados / análise
Agroquímicos / toxicidade
Répteis / anatomia & histologia
Cromatografia Gasosa / métodos
Rio Xingu (PA)