Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/19165
Tipo: Artigo
Título: Mercury fractionation in stream sediments from the Quadrilátero Ferrífero gold mining region, Minas Gerais State, Brazil
Autor(es): Varejão, Eduardo V. V.
Bellato, Carlos R.
Fontes, Maurício P. F.
Abstract: The Iron Quadrangle (IQ) region, located in the state of Minas Gerais, has been the most important gold producing area in Brazil since the end of seventeenth century. The use of mercury for gold amalgamation in small scale mines has been responsible for large release of Hg to aquatic and terrestrial environments during 300 years of mining. The present work sought to evaluate the fractionation of Hg in stream sediments is the southern region of the IQ by utilizing sequential extraction. Since mobility and availability of Hg are related to its distribution among sediment partitions, fractionation methods provide detailed information on the ecotoxicological impact and risks associated to the presence of Hg in sediments. The total Hg concentration varied from 179.3 to 690.1 μg kg − 1 and Hg0 accounted for the majority at all sample sites, ranging from 42% to 56% of the total.
Palavras-chave: Mercury
Sediment
Fractionation
Editor: Environmental Monitoring and Assessment
Tipo de Acesso: Springer Science+Business Media B.V.
URI: https://www.ncbi.nlm.nih.gov/pubmed/18821025
http://www.locus.ufv.br/handle/123456789/19165
Data do documento: 11-Set-2008
Aparece nas coleções:Artigos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
artigo.pdf
  Until 2100-12-31
texto completo427,91 kBAdobe PDFVisualizar/Abrir ACESSO RESTRITO


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.