Table 8.
The concentration of trace elements in red mud leachate (unit: μg/L).
| Samples | Ag | Be | Cd | Co | Hg(total) | Li | Pb | Sb | Se | Sr | Tl |
|---|---|---|---|---|---|---|---|---|---|---|---|
| HN-A-L | 9 | / | 12 | 22 | 599 | 893 | 187 | 14 | 951 | 100 | / |
| SD-A-L | 50 | / | 144 | 48 | 453 | 409 | 1095 | 71 | 1160 | 100 | / |
| GX-A1-L | 8 | / | 172 | 86 | 296 | / | 179 | 22 | 801 | 450 | 5 |
| GX-B-L | 2 | / | 159 | 86 | 275 | 28 | 170 | 21 | 1359 | 750 | / |
| GX-A2-L | 197 | 52 | 110 | 88 | 365 | 143 | 316 | 25 | 525 | 200 | / |
| Range | 2–197 | ≤52 | 12–172 | 22.88 | 275–599 | ≤893 | 170–1095 | 14–71 | 525–1359 | 100–750 | ≤5 |
| USEPA (GW) | 50 | 2 | 5 | - | 2 | - | 15 | 6 | 5 | - | 2 |
| China (GW) | 50 | 2 | 5 | 50 | 1 | - | 10 | 5 | 10 | - | 0.1 |
| IWDS | 500 | 5 | 100 | 1000 | 50 | - | 1000 | - | 0.5 | 10,000 | - |