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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
06/05/1998 |
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Data da última atualização: |
27/03/2017 |
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Autoria: |
SPLANGER, W. J.; SPIGARELLI, J. L.; ROSE, J. M.; FLIPPIN, R. S.; MILLER, H. H. |
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Título: |
Degradation of methylmercury by bacteria isolated from environmental samples. |
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Ano de publicação: |
1973 |
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Fonte/Imprenta: |
Applied Microbiology, v.25, n.4, p.488-493, Apr. 1973. |
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Idioma: |
Inglês |
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Conteúdo: |
A total of 207 bacterial cultures, isolated from environmental samples, was screened for ability to degrade methylmercury. Of these, 30 were found positive for aerobic demethylation. Twenthy-two of these were shown to be facultative anaerobes and 21 of these degraded methylmercury anaerobically. All positive species volatilized methylmercury aerobically, and methane was produced as a degradiation product. Although methylmercury degradation was complete in most cases, material balances indicated some of the inorganic mercury formed was not volatilized and is presumed bound to the cells. All positive isolates were tolerant top as least 0,5 ug of mrthylmercury per ml, and the extent of volatilization of mercury increased with concentrations to the threshold value. The results indicate that demethylation species are prevalent in the environment and may be important in suppressing the methylmercury content of sediments. |
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Palavras-Chave: |
Degradacao. |
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Thesagro: |
Mercúrio; Poluição; Sedimento. |
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Thesaurus Nal: |
degradation; mercury; pollution; sediments. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01618naa a2200265 a 4500
001 1792355
005 2017-03-27
008 1973 bl --- 0-- u #d
100 1 $aSPLANGER, W. J.
245 $aDegradation of methylmercury by bacteria isolated from environmental samples.
260 $c1973
520 $aA total of 207 bacterial cultures, isolated from environmental samples, was screened for ability to degrade methylmercury. Of these, 30 were found positive for aerobic demethylation. Twenthy-two of these were shown to be facultative anaerobes and 21 of these degraded methylmercury anaerobically. All positive species volatilized methylmercury aerobically, and methane was produced as a degradiation product. Although methylmercury degradation was complete in most cases, material balances indicated some of the inorganic mercury formed was not volatilized and is presumed bound to the cells. All positive isolates were tolerant top as least 0,5 ug of mrthylmercury per ml, and the extent of volatilization of mercury increased with concentrations to the threshold value. The results indicate that demethylation species are prevalent in the environment and may be important in suppressing the methylmercury content of sediments.
650 $adegradation
650 $amercury
650 $apollution
650 $asediments
650 $aMercúrio
650 $aPoluição
650 $aSedimento
653 $aDegradacao
700 1 $aSPIGARELLI, J. L.
700 1 $aROSE, J. M.
700 1 $aFLIPPIN, R. S.
700 1 $aMILLER, H. H.
773 $tApplied Microbiology$gv.25, n.4, p.488-493, Apr. 1973.
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Registro original: |
Embrapa Pantanal (CPAP) |
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