Heavy metals (mg/L) | Control | Mixs. | ||
B1 | B2 | B3 | ||
Cu | 299.7 | 0.07 | 0.11 | 0.06 |
Pb | 227.5 | 0.05 | ND | ND |
As | 1380.4 | ND | ND | ND |
Cd | 65.0 | ND | ND | ND |
Zn | 7122.5 | 0.58 | 0.70 | 0.55 |