Back to Search Start Over

Biodegradation of Tributyltin (TBT) by Extremophile Bacteria from Atacama Desert and Speciation of Tin By-products.

Authors :
Yáñez J
Riffo P
Santander P
Mansilla HD
Mondaca MA
Campos V
Amarasiriwardena D
Source :
Bulletin of environmental contamination and toxicology [Bull Environ Contam Toxicol] 2015 Jul; Vol. 95 (1), pp. 126-30. Date of Electronic Publication: 2015 May 15.
Publication Year :
2015

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.

Details

Language :
English
ISSN :
1432-0800
Volume :
95
Issue :
1
Database :
MEDLINE
Journal :
Bulletin of environmental contamination and toxicology
Publication Type :
Academic Journal
Accession number :
25975619
Full Text :
https://doi.org/10.1007/s00128-015-1561-1