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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
01/06/1998 |
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Data da última atualização: |
07/04/2017 |
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Autoria: |
SILVA, A. P. da; FERREIRA, N. L. S.; PADUA, H. B. de; VEIGA, M. M. da; SILVA, G. D. da; OLIVEIRA, E. F. de; SILVA, E. de C. e; OZAKI, S. K. |
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Título: |
Mobilidade do mercurio no Pantanal de Pocone. |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
Ambiente, v.7, n.1, p.52-56, 1993. |
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Idioma: |
Português |
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Conteúdo: |
Ao longo do corrego Tanque dos Padres, drenagem afetada pelo garimpo de ouro, foram monitoradas variaveis biogeoquimicas em funcao da sazonalidade em funcao da sazonalidade. Foram tambem realizados ensaios simulando situacoes extremas de exposicao, tanto da biota como dos sedimentos ativos de corrente. Os indices pluviometricos determinam na regiao estudada duas estacoes bem definidas: a estacao das chuvas (de dezembro a maio) e da seca (junho a novembro). No periodo das chuvas os valores medidos de Eh e pH aproximadamemnte dos limites propicios ao estado oxidado do Hg, condicao necessaria para os processos de metilacao. Comprovaram-se os estudos de KRAUSKOPP (1956), relativos a grande adsorptividade dos oxidos de ferro recem-formados em relacao aos cations metalicos, inclusive de Hg. Os ensaios com elementos da biota confirmaram o controle natural de Hg pelos constituintes dos sedimentos da regiao. |
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Palavras-Chave: |
Garimpo; Gold-miners. |
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Thesagro: |
Extração; Mercúrio; Metal Pesado; Poluição. |
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Thesaurus Nal: |
extraction; mercury; Pantanal; pollution. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01710naa a2200325 a 4500
001 1792594
005 2017-04-07
008 1993 bl --- 0-- u #d
100 1 $aSILVA, A. P. da
245 $aMobilidade do mercurio no Pantanal de Pocone.
260 $c1993
520 $aAo longo do corrego Tanque dos Padres, drenagem afetada pelo garimpo de ouro, foram monitoradas variaveis biogeoquimicas em funcao da sazonalidade em funcao da sazonalidade. Foram tambem realizados ensaios simulando situacoes extremas de exposicao, tanto da biota como dos sedimentos ativos de corrente. Os indices pluviometricos determinam na regiao estudada duas estacoes bem definidas: a estacao das chuvas (de dezembro a maio) e da seca (junho a novembro). No periodo das chuvas os valores medidos de Eh e pH aproximadamemnte dos limites propicios ao estado oxidado do Hg, condicao necessaria para os processos de metilacao. Comprovaram-se os estudos de KRAUSKOPP (1956), relativos a grande adsorptividade dos oxidos de ferro recem-formados em relacao aos cations metalicos, inclusive de Hg. Os ensaios com elementos da biota confirmaram o controle natural de Hg pelos constituintes dos sedimentos da regiao.
650 $aextraction
650 $amercury
650 $aPantanal
650 $apollution
650 $aExtração
650 $aMercúrio
650 $aMetal Pesado
650 $aPoluição
653 $aGarimpo
653 $aGold-miners
700 1 $aFERREIRA, N. L. S.
700 1 $aPADUA, H. B. de
700 1 $aVEIGA, M. M. da
700 1 $aSILVA, G. D. da
700 1 $aOLIVEIRA, E. F. de
700 1 $aSILVA, E. de C. e
700 1 $aOZAKI, S. K.
773 $tAmbiente$gv.7, n.1, p.52-56, 1993.
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Registro original: |
Embrapa Pantanal (CPAP) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados; Embrapa Soja. |
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Data corrente: |
12/11/2008 |
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Data da última atualização: |
12/11/2008 |
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Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
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Autoria: |
PAIVA, E.; NEPOMUCENO, A. L. |
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Título: |
OGMs na agricultura brasileira e mundial. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: FALEIRO, F. G.; FARIAS NETO, A. L. de (Ed.). Savanas: desafios e estratégias para o equilíbrio entre sociedade, agronegócio e recursos naturais. Planaltina, DF: Embrapa Cerrados, 2008. cap. 24, p. 795-810. |
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Idioma: |
Português |
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Conteúdo: |
There is no more doubt that the world's food production systems are overloaded and unstable. The cycle of cheap food and overabundance has nearly reached its limit as a result of economic growth of very populations countries such as China, India, Brazil, decrease in food production due to global warning and the employment of unsustainable agriculture practices in food production. The adoption of biotech crops associated with good traditional farming practices is being considered a top priority in any country that whishes to have food security (quantity and quality) associated with environmental protection. The future for biotech crops looks encouraging all over world. In 2007, there were 23 countries planting biotech crops in an area that reached 114.3 million hectares. The first dozen years of biotech crops commercialization have provided substantial economical and environmental benefits to rich and poor farmers in both industrial and developing countries. Brazil is the third largest adopter of biotech crops in the world, cultivating an area of 15 million hectares, of which 14.5 million hectares were planted with soybean resistant to the herbicide glyphosate and 0.5 million hectares with cotton tolerant to insects. However, the design and implementation of the biosafety regulatory system in the country is being very difficult and slowly done. The reason for this, are the aggressive actions of "environmental groups" which are against the technology. They have being very efficient in scaring and misinforming judges and politicians, delaying a more quickly and rational adoption of the biotech crops in Brazil. This delay had already resulted in large economical, technological and environmental loses to the country. MenosThere is no more doubt that the world's food production systems are overloaded and unstable. The cycle of cheap food and overabundance has nearly reached its limit as a result of economic growth of very populations countries such as China, India, Brazil, decrease in food production due to global warning and the employment of unsustainable agriculture practices in food production. The adoption of biotech crops associated with good traditional farming practices is being considered a top priority in any country that whishes to have food security (quantity and quality) associated with environmental protection. The future for biotech crops looks encouraging all over world. In 2007, there were 23 countries planting biotech crops in an area that reached 114.3 million hectares. The first dozen years of biotech crops commercialization have provided substantial economical and environmental benefits to rich and poor farmers in both industrial and developing countries. Brazil is the third largest adopter of biotech crops in the world, cultivating an area of 15 million hectares, of which 14.5 million hectares were planted with soybean resistant to the herbicide glyphosate and 0.5 million hectares with cotton tolerant to insects. However, the design and implementation of the biosafety regulatory system in the country is being very difficult and slowly done. The reason for this, are the aggressive actions of "environmental groups" which are against the technology. They have being very effi... Mostrar Tudo |
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Palavras-Chave: |
Bioatecnologia; Transgênico. |
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Thesagro: |
Biossegurança; Engenharia Genética. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02376naa a2200181 a 4500
001 1571523
005 2008-11-12
008 2008 bl uuuu u00u1 u #d
100 1 $aPAIVA, E.
245 $aOGMs na agricultura brasileira e mundial.
260 $c2008
520 $aThere is no more doubt that the world's food production systems are overloaded and unstable. The cycle of cheap food and overabundance has nearly reached its limit as a result of economic growth of very populations countries such as China, India, Brazil, decrease in food production due to global warning and the employment of unsustainable agriculture practices in food production. The adoption of biotech crops associated with good traditional farming practices is being considered a top priority in any country that whishes to have food security (quantity and quality) associated with environmental protection. The future for biotech crops looks encouraging all over world. In 2007, there were 23 countries planting biotech crops in an area that reached 114.3 million hectares. The first dozen years of biotech crops commercialization have provided substantial economical and environmental benefits to rich and poor farmers in both industrial and developing countries. Brazil is the third largest adopter of biotech crops in the world, cultivating an area of 15 million hectares, of which 14.5 million hectares were planted with soybean resistant to the herbicide glyphosate and 0.5 million hectares with cotton tolerant to insects. However, the design and implementation of the biosafety regulatory system in the country is being very difficult and slowly done. The reason for this, are the aggressive actions of "environmental groups" which are against the technology. They have being very efficient in scaring and misinforming judges and politicians, delaying a more quickly and rational adoption of the biotech crops in Brazil. This delay had already resulted in large economical, technological and environmental loses to the country.
650 $aBiossegurança
650 $aEngenharia Genética
653 $aBioatecnologia
653 $aTransgênico
700 1 $aNEPOMUCENO, A. L.
773 $tIn: FALEIRO, F. G.; FARIAS NETO, A. L. de (Ed.). Savanas: desafios e estratégias para o equilíbrio entre sociedade, agronegócio e recursos naturais. Planaltina, DF: Embrapa Cerrados, 2008. cap. 24, p. 795-810.
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