CH4 production via CO2 reduction in a temperate bog - A source of (C-13)-depleted CH4

Details CH4 production via CO2 reduction in a temperate bog - A source of (C-13)-depleted CH4 CH4 production via CO2 reduction in a temperate bog - A source of (C-13)-depleted CH4

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gecoa..56.3493l&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 56, no. 9, Sept. 1992, p. 3493-3503.

Mathematics

Logic

21

Biogeochemistry, Biological Evolution, Carbon Dioxide, Carbon 13, Methane, Reduction (Chemistry), Atmospheric Composition, Carbon 14, In Situ Measurement, Isotope Effect, Sodium Carbonates, Tracers

Scientific paper

The paper reports measurements, taken over two annual cycles, of the flux and delta(C-13) of CH4 released from an acidic peat bog located in the foothills of the Cascade Range in Washington state, U.S. Measurements of the rate of aceticlastic methanogenesis and CO2 reduction in peat soil, using (C-14)-labeled acetate and sodium bicarbonate, show that acetate was not an important CH4 precursor and that CO2 reduction could account for all of the CH4 production. The in situ kinetic isotope effect for CO2 reduction, calculated using the delta-(C-13) of soil water CO2 and CH4 flux, was 0.932 +/- 0.007.

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