Metal | Not polluted | Moderately polluted | Heavily polluted | Present study |
Ag | - | - | - | 1.1 - 5.3 |
Cu | <25 | 25 - 50 | >50 | 11 - 75 |
Ni | <20 | 20 - 50 | >50 | 18 - 65 |
Pb | <40 | 40 - 60 | >60 | 1.1 - 5.3 |
Co | - | - | - | 18 - 54 |
Cr | <25 | 25 - 75 | >75 | 68.9 - 251 |
Mn | <300 | 300 - 500 | >500 | 229 - 1100 |