Evaluation of methyl fluoride and dimethyl ether as inhibitors of aerobic methane oxidation

Applied and Environmental Microbiology
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Abstract

Methyl fluoride (MF) and dimethyl ether (DME) were effective inhibitors of aerobic methanotrophy in a variety of soils. MF and DME blocked consumption of CH4 as well as the oxidation of 14CH4 to 14CO2, but neither MF nor DME affected the oxidation of [14C]methanol or [14C]formate to 14CO2. Cooxidation of ethane and propane by methane-oxidizing soils was also inhibited by MF. Nitrification (ammonia oxidation) in soils was inhibited by both MF and DME. Production of N2O via nitrification was inhibited by MF; however, MF did not affect N2O production associated with denitrification. Methanogenesis was partially inhibited by MF but not by DME. Methane oxidation was ~100-fold more sensitive to MF than was methanogenesis, indicating that an optimum concentration could be employed to selectively block methanotrophy. MF inhibited methane oxidation by cell suspensions of Methylococcus capsulatus; however, DME was a much less effective inhibitor.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Evaluation of methyl fluoride and dimethyl ether as inhibitors of aerobic methane oxidation
Series title Applied and Environmental Microbiology
Volume 58
Issue 9
Year Published 1992
Language English
Publisher ASM
Contributing office(s) Pacific Regional Director's Office, San Francisco Bay-Delta, Toxic Substances Hydrology Program
Description 10 p.
First page 2983
Last page 2992
Online Only (Y/N) N
Additional Online Files (Y/N) N