Análise da presença dos metais pesados em sedimento e em organismos bentônicos da ilha de Itacolomi, estado do Paraná, Brasil.

• Ano de defesa: 2012
• Autor(a) principal: Santos, Renê Trombini Dos
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Positivo; Brasil; Pós-Graduação; Programa de Pós-Graduação em Gestão Ambiental; UP
• Palavras-chave em Português: Metal pesado; Poluição ambiental; Sedimentos; Bioacumulação; CNPQ::CIENCIAS BIOLOGICAS; CNPQ::ENGENHARIAS::ENGENHARIA SANITARIA
• Link de acesso: https://repositorio.cruzeirodosul.edu.br/handle/123456789/2408

The assessment of marine organisms and marine sediment is a research practice established worldwide as a method of assessment of pollution in aquatic environments. The analysis was based on the collection of species Anisotremus surinamensis (Bloch, 1791), Holocentrus adscensionis (Osbeck, 1765), Echinometra lucunter (Linnaeus, 1758) and the surface layer of marine sediment at four points around the island of Itacolomi. The samples were opened and the metals mercury, arsenic, cadmium and lead were analyzed according to methodology CETESB. The mean values obtained in this study were 0.435 µg.g-1 for Cd, 0.296 µg.g-1 for Hg, As and Pb was not detected was below the detection limit for the muscle tissue of the species H. adscensionis. For the species A. surinamensis, the average was 0.785 µg.g-1 for As, while for the metals Cd, Hg and Pb the averages were below the detection limit, also for the muscle tissue. When equinoderme E. lucunter tissue analyzed was gonadal and presented the average 6.118 µg.g-1 for As, 0.205 µg.g-1 to Hg, Cd and Pb as the means presented below the detection limit. The analysis of the heavy metals by atomic absorption spectrophotometry in surface sediments evidenced an average value of 0.5047 µg.g-1 to Cd, 3.2752 µg.g-1 average of Cu, 0.2235 µg.g-1 to As and 0.4038 µg.g-1 for Hg. Overall the results presented here suggest that the region analyzed is presented free of pollution by metals analyzed, as well as the organisms analyzed could be used as bioindicators with a reasonable prospect of application to other environments similar to the island of Itacolomi. Thus the objective of this research is to analyze the presence of heavy metals (Hg, As, Cd, Cu and Pb) in marine sediment and biota of the island of Itacolomi, Paraná, Brazil.