Use este identificador para citar ou linkar para este item:
https://locus.ufv.br//handle/123456789/21663
Tipo: | Artigo |
Título: | Heavy metal contamination in coastal sediments and soils near the Brazilian Antarctic Station, King George Island |
Autor(es): | Schaefer, Carlos E.G.R. Albuquerque-Filho, Manoel R. Santos, Isaac R. Silva-Filho, Emmanoel V. Campos, Lúcia S. |
Abstract: | This paper investigates the natural and anthropogenic processes controlling sediment chemistry in Admiralty Bay, King George Island, Antarctica, emphasizing the area affected by the Brazilian Antarctic Station Comandante Ferraz (Ferraz). Total and bioavailable concentrations of sixteen elements were determined in 32 sediment and 14 soils samples. Factor analysis allowed us to distinguish three groups of samples: (1) Ferraz sediments, with higher content of total trace metals and organic matter; (2) control sediments, with intermediate characteristics; (3) Ferraz soils, with higher bioavailability of most metals due to its oxidizing condition and low organic matter content. Major elements such as Fe, Al, Ca and Ti presented similar levels in all three groups. Enrichment factor calculations showed that paints, sewage and petroleum contamination enhanced metal concentrations in Ferraz surface sediments as follows: B, Mo, and Pb (>90%); V and Zn (70–80%); Ni, Cu, Mg, and Mn (30–40%). Despite evidence of contamination in these sediments, the low bioavailability, probably caused by iron-sulfide, indicates small environmental risks. |
Palavras-chave: | Antarctica Pollution Trace metals Coastal environment Bulk fraction Ferraz Station |
Editor: | Marine Pollution Bulletin |
Tipo de Acesso: | Elsevier B.V. |
URI: | https://doi.org/10.1016/j.marpolbul.2004.10.009 http://www.locus.ufv.br/handle/123456789/21663 |
Data do documento: | Fev-2005 |
Aparece nas coleções: | Solos - Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
---|---|---|---|---|
artigo.pdf Until 2100-12-31 | Texto completo | 400,04 kB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.