Metal contamination and fractionation in sediments from the lower basin of the Vale do Ribeira (SE, Brazil)

Autor(es)

Bonnail, Estefania ; Buruaem, Lucas M. ; Morais, Lucas G. ; Abessa, Denis M. S. ; Sarmiento, Aguasanta M. ; Angel DelValls, T.

• Tipo de documento: Artigo Científico
• Fonte: ENVIRONMENTAL MONITORING AND ASSESSMENT; v. 189, n. 6 JUN 2017.
• Citações Web of Science: 2

Resumo

The sediment quality of Ribeira de Iguape River is affected by former Pb extraction mining. Some studies affirm the restoration status of the basin, however, mobility of metals and its associated risk is still questioned. This study integrates the metal concentrations in the lower part of the basin with different contamination source to determine the existence of risks associated with the mobile fractions of the geochemical matrix. Despite concentrations of metals were low and the environmental risk factor values were negative, our results indicated that As, Mn, Pb, and V were present in the most labile forms. The multivariate analysis conducted using metal concentrations, environmental risk factor values and speciation suggested that any risk would be associated with the labile fractions of the analyzed elements, especially for Pb. The station from Registro was stressed by Co, Pb and Zn; with Pb under the reactive fraction that could be associated with high mobility and potential bioavailability. (AU)

• Processo FAPESP: 09/52762-6 - Analise ecotoxicologica e biomonitoramento em bivalves do rio ribeira de iguape - avaliacao da poluicao
• Beneficiário: Denis Moledo de Souza Abessa
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/15482-0 - Estabelecimento de valores de referência sítio-específicos para concentrações de contaminantes em sedimentos do litoral do Estado de São Paulo: bases científicas para a criação de uma legislação no âmbito nacional
• Beneficiário: Lucas Buruaem Moreira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado