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Effect of methyl tert-butyl ether and its metabolites on microbial activity and diversity in tidal mud flat

Title
Effect of methyl tert-butyl ether and its metabolites on microbial activity and diversity in tidal mud flat
Authors
Cho W.-S.Cho K.-S.
Ewha Authors
조경숙
SCOPUS Author ID
조경숙scopus
Issue Date
2008
Journal Title
Korean Journal of Microbiology and Biotechnology
ISSN
1598-642XJCR Link
Citation
vol. 36, no. 4, pp. 336 - 342
Indexed
SCOPUS; KCI scopus
Abstract
The effect of methyl tert-butyl ether (MTBE) and its metabolites like tert-butyl alcohol (TBA), and formaldehyde (FA) on microbial activity and diversity in tidal mud flat was studied. MTBE, TBA, and FA with different concentrations were added into microcosms containing tidal mud samples, and placed at room temperature for 30 days. Then the physico-chemical properties such as pH, moisture contents and organic matter contents in the microcosms were measured. In addition, the total viable cell number and dehydrogenase activity were measured. Bacterial communities in the microcosms were monitored using a 16S rRNA-PCR-DGGE (Denaturing gradient gel electrophoresis) fingerprinting method. As a result, the exposure concentrations of MTBE and its metabolites showed no correlation with the physico-chemical factors (P>0.05). Dehydrogenase activity and total viable cell number were decreased with increasing MTBE, TBA and FA concentrations (P<0.05). The toxic effect was higher the following order: FA > MTBE > TBA. Dominant species in the microcosms contaminated with MTBE and its metabolites were Sphingobacteria, Flavobacteria, delta-proteobacteria, gamma-proteobacteria. The diversity of bacterial community was not significantly influenced by MTBE and its metabolites.
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엘텍공과대학 > 환경공학전공 > Journal papers
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