Research Article
Improvements in Drill-Core Headspace Gas Analysis for Samples from Microbially Active Depths
Table 3
δ 13CCH4, δ13CCO2, methane, and TIC contents in EV samples.
| | Sample no. | Storage period (days) | Sampling depth of groundwater (ground level -m) | δ 13CCH4 (‰ VPDB) | δ 13CCO2 (‰ VPDB) | Concentration of dissolved CH4 (mmol kg−1) | Concentration of total inorganic carbon (TIC) (mmol kg−1) |
| | EV1 | 6 | 248.5 | −56.7 | +17.1 | — | — | | EV2 | 55 | 248.5 | −54.0 | +17.8 | 7.8 | — | | EV3 | 98 | 248.5 | −53.7 | +17.3 | 8.5 | — | | EV4 | 6 | 248.5 | −56.8 | +16.9 | 8.7 | 42 | | EV5 | 55 | 248.5 | −54.5 | +16.2 | 6.7 | 37 | | EV6 | 98 | 248.5 | −52.7 | +16.7 | 6.7 | 35 |
|
|
