Abstract
Biodegradation of tributyltin (TBT) by four tin resistant Gram negative bacteria isolated from extremely contaminated river sediments in the Atacama Desert in Chile was studied. Moraxella osloensis showed the greatest resistance and degradation capability of TBT, producing less toxic by-products, such as dibutyltin (DBT) and inorganic tin. In 7 days, approximately 80 % of TBT degradation was achieved, generating close to 20 % of DBT as degradation product. The degradation rate constant (k) was 0.022 [day(-1)] and TBT half-life (t1/2) in culture was 4.3 days. Debutylation is stated a probable mechanism of TBT degradation.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Alcaligenes / metabolism
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Bacteria / metabolism*
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Biodegradation, Environmental
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Burkholderia cepacia / metabolism
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Chile
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Desert Climate*
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Drug Resistance, Bacterial
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Geologic Sediments / chemistry
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Half-Life
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Moraxella / metabolism
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Organotin Compounds / analysis*
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Pseudomonas / metabolism
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Rivers
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Soil
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Soil Microbiology
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Soil Pollutants / analysis
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Time Factors
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Tin / analysis*
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Trialkyltin Compounds / analysis*
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Water Pollutants / analysis
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Yersinia / metabolism
Substances
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Organotin Compounds
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Soil
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Soil Pollutants
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Trialkyltin Compounds
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Water Pollutants
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di-n-butyltin
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tributyltin
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Tin