Elements N = 20 | mean | max | min | Worldwide data in soil* | Limit values for industrial use (Belgium)** |
Fe% | 10.6 | 22.4 | 4.5 | - | - |
Mn | 750 | 1300 | 100 | 418 | - |
Cr | 92 | 293 | 37 | 42 | 800 |
Cu% | 14.5 | 43.6 | 1.2 | 14 | 800 |
Cd | 24 | 246 | 4 | 1.1 | 30 |
As | 850 | 4600 | 100 | 4.7 | 300 |
Se | 21 | 251 | ND | 0.7 | - |
Zn | 2455 | 13,300 | 200 | 62 | 3000 |
Pb | 2185 | 28,000 | 200 | 25 | 2500 |
Pt | 84 | 110 | 29 | - | - |