ETBE (ethyl tert butyl ether) and TAME (tert amyl methyl ether) affect microbial community structure and function in soils. 2011

Johanna Bartling, and Jürgen Esperschütz, and Berndt-Michael Wilke, and Michael Schloter
Berlin University of Technology, Institute of Ecology, Franklinstr 29, 10587 Berlin, Germany. johanna.bartling@tu-berlin.de

Ethyl tert butyl ether (ETBE) and tert amyl methyl ether (TAME) are oxygenates used in gasoline in order to reduce emissions from vehicles. The present study investigated their impact on a soil microflora that never was exposed to any contamination before. Therefore, soil was artificially contaminated and incubated over 6 weeks. Substrate induced respiration (SIR) measurements and phospholipid fatty acid (PLFA) analysis indicated shifts in both, microbial function and structure during incubation. The results showed an activation of microbial respiration in the presence of ETBE and TAME, suggesting biodegradation by the microflora. Furthermore, PLFA concentrations decreased in the presence of ETBE and TAME and Gram-positive bacteria became more dominant in the microbial community.

UI MeSH Term Description Entries
D008738 Methyl Ethers A group of compounds that contain the general formula R-OCH3. Ethers, Methyl
D005019 Ethyl Ethers Organic compounds having ethyl groups bound to an oxygen atom. Ethoxy Compounds,Compounds, Ethoxy,Ethers, Ethyl
D001673 Biodegradation, Environmental Elimination of ENVIRONMENTAL POLLUTANTS; PESTICIDES and other waste using living organisms, usually involving intervention of environmental or sanitation engineers. Bioremediation,Phytoremediation,Natural Attenuation, Pollution,Environmental Biodegradation,Pollution Natural Attenuation
D012988 Soil Microbiology The presence of bacteria, viruses, and fungi in the soil. This term is not restricted to pathogenic organisms. Microbiology, Soil
D012989 Soil Pollutants Substances which pollute the soil. Use for soil pollutants in general or for which there is no specific heading. Soil Pollutant,Pollutant, Soil,Pollutants, Soil

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