Produção Nacional
Assessment of the heavy metal pollution in a gold “garimpo”
1998; Springer Science+Business Media; Linguagem: Inglês
10.1007/bfb0010915
ISSN1613-2580
AutoresSaulo Rodrigues-Filho, John Edmund Lewis Maddock,
Tópico(s)Tailings Management and Properties
ResumoGold has been exploited in the Poconé regions, in Mato Grosso state in Brazil, during the past 13 years using garimpo methods. In this study, background levels of metals were determined by analysing sediments and soils unaffected by mining activities, located upstream of the anthropogenic inputs. The study done in Poconé focuses on Hg, Cu, Pb, Zn, Fe and Mn. In addition, the study aims to evaluate the level of contamination in sediments, soils and water, taking into account drainage waters directly affected by gold mining. As the physical-chemical parameters of the waters are subjected to seasonal variations, they were monitored throughout the year to interpret the behaviour of the metals in the studied environments. In general, the concentrations of Cu, Pb, Zn, Fe and Mn presented values very close to the background in sediments, while the concentrations of Hg in sediments showed anomalous geo-accumulation indexes.
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