Table 1.
Physicochemical parameters of groundwater and components of natural gas.
| Site code | Groundwater | Natural gas | |||||||
|---|---|---|---|---|---|---|---|---|---|
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| Temp. (°C) | pH | ORP (mV) | EC (mS m−1) | N2 (vol.%) | CH4 (vol.%) | C2H6 (vol.%) | C3H8 (vol.%) | C1/(C2 + C3) | |
| YHN | 53.7 | 7.1 | −275 | 4,500 | 0.24 | 99.7 | 0.044 | 0.003 | 2,117 |
| LSH | 40.7 | 7.4 | −179 | 3,200 | 5.94 | 94.0 | 0.012 | <0.001 | 7,902 |
| XTU | 49.8 | 7.5 | −223 | 3,090 | 6.20 | 93.8 | 0.019 | <0.001 | 5,031 |
| ARM | 41.5 | 7.8 | −250 | 878 | 6.25 | 93.7 | 0.013 | <0.001 | 7,037 |
Abbreviations: ORP, oxidation-reduction potential; EC, electrical conductivity; C1, CH4; C2, C2H6; C3, C3H8.