TABLE 1.
Inhibition of methane oxidation and consumption of DFM in Searsville Lake soil during 6- to 7-day incubations with two levels of CH4 and various levels of added CH2F2
| Inhibitor added (kPa) | CH4
|
DFM
|
||
|---|---|---|---|---|
| Consumeda (nmol g−1 day−1) | Inhibited (%) | Consumeda (nmol g−1 day−1) | Consumed (%) | |
| 5.0 kPa of CH4 | ||||
| None | 4,261 | 0 | ||
| DFM (0.01) | 286 | 93 | 2.50 | 67 |
| DFM (0.03) | 104 | 98 | 2.30 | 20 |
| DFM (0.05) | 43 | 99 | 1.16 | 6 |
| 0.05 kPa of CH4 | ||||
| None | 11.9 | 0 | ||
| DFM (0.01) | 2.22 | 81 | 0.90 | 28 |
| DFM (0.03) | −0.95b | 100b | 0.50 | 5 |
| DFM (0.05) | 0.09 | 99 | 1.63 | 9 |
a Calculated as (initial concentration − final concentration)/elapsed time; means of three soil samples.
b Slight production occurred during incubation.