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| 1. |  | GODOY, J. M.; PADOVANI, C. R.; PEREIRA, J. C. A.; VIEIRA, L. M. Aplicabilidade da geocronologia da deposicao de sedimento com 210Pb como ferramenta na avaliacao do assoreamento do rio Taquari, Pantanal, MS. Geochimica Brasiliensis, v.12, n.1/2, p.113-121, 1998.| Biblioteca(s): Embrapa Pantanal. |
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| 2. | | GODOY, J. M.; PADOVANI, C. R.; PEREIRA, J. C. A.; VIEIRA, L. M.; CARVALHO, Z. L.; GALDINO, S. Evalution of the Rio Taquari, Pantanal, Brazil, silting up based on the 210Pb geochronology of floodplain lakes sediments. In: INTERNATIONAL SYMPOSIUM ENVIRONMENTAL GEOCHEMISTRY IN TROPICAL COUNTRIES, 3., 1999, Nova Friburgo. Book Abstracts.| Biblioteca(s): Embrapa Pantanal. |
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| 3. | | GODOY, J. M.; GUIMARAES, J. R. D.; PADOVANI, C. R.; PEREIRA, J. C. A.; VIEIRA, L. M.; CARVALHO, Z. L.; GALDINO, S. Mercury levels on sediment cores from a non gold mining area of the Brazilian Pantanal. In: INTERNATIONAL SYMPOSIUM ENVIRONMENTAL GEOCHEMISTRY IN TROPICAL COUNTRIES, 3., 1999, Nova Friburgo. Book Abstracts.| Biblioteca(s): Embrapa Pantanal. |
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| Registros recuperados : 3 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
06/06/2000 |
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Data da última atualização: |
31/03/2017 |
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Autoria: |
GODOY, J. M.; GUIMARAES, J. R. D.; PADOVANI, C. R.; PEREIRA, J. C. A.; VIEIRA, L. M.; CARVALHO, Z. L.; GALDINO, S. |
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Afiliação: |
CNEN.Instituto de Radioprotecao e Dosemetria (Rio de Janeiro, RJ). PUC.Departamento de Quimica (Rio de Janeiro, RJ). UFRJ.Instituto de Biofisica (Rio de Janeiro, RJ). EMBRAPA Pantanal (Corumba, MS). |
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Título: |
Mercury levels on sediment cores from a non gold mining area of the Brazilian Pantanal. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
In: INTERNATIONAL SYMPOSIUM ENVIRONMENTAL GEOCHEMISTRY IN TROPICAL COUNTRIES, 3., 1999, Nova Friburgo. Book Abstracts. |
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Idioma: |
Inglês |
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Conteúdo: |
The mercury concentration was determined on two sediment cores taken from floodplain lakes from the Taquari River, Mato Grosso do Sul. The lakes studied during this work were located close to the city of Coxim, in the coordinates 18º 24' 10"S and 54º 58' 46"W (Lake 1) and 18º 21' 57"S and 54º 59' 38"W (Lake 2). The sediment cores were taken using a gravity corer and P^VC tubes. They were cut into 2 cm slices, and the central part of each slice was reserved for mercury determination. The Pb-210 technique was used for sediment dating and determination of mass sedimentation rates. Mercury was analyzed by cold vapor atomic absorption spectrometry. Both cores have shown a similar pattern with mercury concentrations between 20 and 80 ug.g-1 for Lake 1 and 13 and 60 ug.g-1 for Lake 2. The mercury concentrations are approximately constant until 1940 and lower than present values by a factor of two. |
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Palavras-Chave: |
Brasil; Gold mining; Mineracao de ouro; Sediment. |
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Thesagro: |
Mercúrio; Sedimento. |
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Thesaurus NAL: |
Brazil; mercury; Pantanal. |
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Categoria do assunto: |
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Marc: |
LEADER 01761naa a2200301 a 4500
001 1801095
005 2017-03-31
008 1999 bl --- 0-- u #d
100 1 $aGODOY, J. M.
245 $aMercury levels on sediment cores from a non gold mining area of the Brazilian Pantanal.
260 $c1999
520 $aThe mercury concentration was determined on two sediment cores taken from floodplain lakes from the Taquari River, Mato Grosso do Sul. The lakes studied during this work were located close to the city of Coxim, in the coordinates 18º 24' 10"S and 54º 58' 46"W (Lake 1) and 18º 21' 57"S and 54º 59' 38"W (Lake 2). The sediment cores were taken using a gravity corer and P^VC tubes. They were cut into 2 cm slices, and the central part of each slice was reserved for mercury determination. The Pb-210 technique was used for sediment dating and determination of mass sedimentation rates. Mercury was analyzed by cold vapor atomic absorption spectrometry. Both cores have shown a similar pattern with mercury concentrations between 20 and 80 ug.g-1 for Lake 1 and 13 and 60 ug.g-1 for Lake 2. The mercury concentrations are approximately constant until 1940 and lower than present values by a factor of two.
650 $aBrazil
650 $amercury
650 $aPantanal
650 $aMercúrio
650 $aSedimento
653 $aBrasil
653 $aGold mining
653 $aMineracao de ouro
653 $aSediment
700 1 $aGUIMARAES, J. R. D.
700 1 $aPADOVANI, C. R.
700 1 $aPEREIRA, J. C. A.
700 1 $aVIEIRA, L. M.
700 1 $aCARVALHO, Z. L.
700 1 $aGALDINO, S.
773 $tIn: INTERNATIONAL SYMPOSIUM ENVIRONMENTAL GEOCHEMISTRY IN TROPICAL COUNTRIES, 3., 1999, Nova Friburgo. Book Abstracts.
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Embrapa Pantanal (CPAP) |
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