Soil as a Sink for Atmospheric Carbon Monoxide

Science  19 Jun 1981:
Vol. 212, Issue 4501, pp. 1389-1391
DOI: 10.1126/science.212.4501.1389


The rate of carbon monoxide oxidation by soil increased with increasing carbon monoxide concentration in the gas phase, in line with Michaelis-Menten kinetics. Rates of carbon monoxide oxidation were determined for 20 soils at 0°, 10°, 20°, and 30°C. The observed oxidation rates were used to calculate a global soil uptake rate of atmospheric carbon monoxide of 4.1 x 1014 grams per year, which is slightly less than the amount of carbon monoxide believed to be produced annually as a result of fossil fuel combustion.