Study on the Historical Distribution of Metals in Aquatic Sediments

Abstract

In this study, the historical distribution of metals, phosphorous, and sulfur at four different depths in the sediments of different lakes formed in the course of an urban river (in Londrina, Parana State, Brazil) were determined. The transport of metals along the course of the river was observed mainly for Mn, Cr, and Zn. High concentrations of Pb in the Capivara Bay and Cr in the river were attributed to contamination from a battery plant and a tannery, respectively. The concentrations of heavy metals in the deepest layers of the sediments remain high several years after deposition.

Tópicos em Ciências e Tecnologia de Alimentos: Resultados de Pesquisas Acadêmicas - Vol. 3

“…Valores superiores foram observados em amostras provenientes de tanque-rede no rio Tibagi. Estudos de metais pesados em água, sedimento e peixes demonstraram contaminação por metais no rio Tibagi e seus efluentes, decorrente do transporte desses contaminantes ao longo do rio, proveniente de práticas agrícolas, atividades de mineração, curtume, entre outras fontes antropogênicas (GALUNIN et al, 2014;BARRETO et al, 2010;BISINOTI;YABE;GIMINEZ, 2004).…”