The interaction of sediment bacteria with arsenic compounds ...
In general, bacteria are capable of biotransforming inorganic arsenic into methylarsenic acids and arsines. The microbial activity of lake sediments was examined with respect to the mobilization of mine tailings that have a high arsenic content. Aerobic and anaerobic mixed microbial populations were...
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2009
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ftdatacite:10.14288/1.0061726 2024-04-28T08:41:23+00:00 The interaction of sediment bacteria with arsenic compounds ... Jaafar, Jafariah 2009 https://dx.doi.org/10.14288/1.0061726 https://doi.library.ubc.ca/10.14288/1.0061726 en eng University of British Columbia article-journal Text ScholarlyArticle 2009 ftdatacite https://doi.org/10.14288/1.0061726 2024-04-02T09:39:06Z In general, bacteria are capable of biotransforming inorganic arsenic into methylarsenic acids and arsines. The microbial activity of lake sediments was examined with respect to the mobilization of mine tailings that have a high arsenic content. Aerobic and anaerobic mixed microbial populations were isolated from Kam Lake, Yellowknife, N.W.T. An aerobic microbial population from 5 cm sediment depth, the layer immediately above the contaminated mine tailings, was capable of transforming arsenicals. Speciation of arsenicals in the culture medium, determined by using hydride generation - gas chromatography - atomic absorption spectrometry (HG-GC-AAS) shows that this bacterial population is able to methylate arsenicals and subsequently demethylate the product. However, only methylation was observed in media containing dimethylarsinic acid. Anaerobic microbial populations, from all depths, produce a yellow precipitate upon incubation with arsenate for 10-14 days. The precipitate was identified as AS₂S₃ by ... Text Yellowknife DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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English |
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In general, bacteria are capable of biotransforming inorganic arsenic into methylarsenic acids and arsines. The microbial activity of lake sediments was examined with respect to the mobilization of mine tailings that have a high arsenic content. Aerobic and anaerobic mixed microbial populations were isolated from Kam Lake, Yellowknife, N.W.T. An aerobic microbial population from 5 cm sediment depth, the layer immediately above the contaminated mine tailings, was capable of transforming arsenicals. Speciation of arsenicals in the culture medium, determined by using hydride generation - gas chromatography - atomic absorption spectrometry (HG-GC-AAS) shows that this bacterial population is able to methylate arsenicals and subsequently demethylate the product. However, only methylation was observed in media containing dimethylarsinic acid. Anaerobic microbial populations, from all depths, produce a yellow precipitate upon incubation with arsenate for 10-14 days. The precipitate was identified as AS₂S₃ by ... |
format |
Text |
author |
Jaafar, Jafariah |
spellingShingle |
Jaafar, Jafariah The interaction of sediment bacteria with arsenic compounds ... |
author_facet |
Jaafar, Jafariah |
author_sort |
Jaafar, Jafariah |
title |
The interaction of sediment bacteria with arsenic compounds ... |
title_short |
The interaction of sediment bacteria with arsenic compounds ... |
title_full |
The interaction of sediment bacteria with arsenic compounds ... |
title_fullStr |
The interaction of sediment bacteria with arsenic compounds ... |
title_full_unstemmed |
The interaction of sediment bacteria with arsenic compounds ... |
title_sort |
interaction of sediment bacteria with arsenic compounds ... |
publisher |
University of British Columbia |
publishDate |
2009 |
url |
https://dx.doi.org/10.14288/1.0061726 https://doi.library.ubc.ca/10.14288/1.0061726 |
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Yellowknife |
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Yellowknife |
op_doi |
https://doi.org/10.14288/1.0061726 |
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1797571647020990464 |