TABLE 1.
Geochemical characteristics of surface P4 water, in situ pore water in aquatic sediment, and pore water incubated for 30 days under anoxic conditions
| Characteristic | Value for indicated sample (mg/liter, unless indicated otherwise)a
|
||
|---|---|---|---|
| Surface pH water | In situ pore water | Incubated pore water | |
| Temperature (°C) | 19.4 | 19.6 | 23.5 |
| pH | 7.82 | 7.01 | 6.74 |
| DOC | 3.21 | 787.24 | 5,366.42 |
| Alkalinity | 42.4 | ND | ND |
| Fe(II) | 0.01 | 9.44 | 10.72 |
| Fe(total) | 0.07 | 9.48 | 10.87 |
| Mn | 0.77 | 18.22 | 5.91 |
| NO3− | 3.14 | 0.82 | 0.63 |
| SO42− | 354.20 | 246.25 | 123.12 |
| S2− | <0.001 | 0.06 | 0.16 |
| Ca | 138.01 | 198.88 | 221.96 |
| Cu | 0.135 | 0.17 | 0.16 |
| U | 2.67 | 7.30 | 0.22 |
a
All values are means from at least duplicate measurements and ranged within <10% error, unless indicated otherwise. ND, not determined in this study.