Metal | Soil fertilization, land reclamation | Agro-technical composting. Drainage and reclamation | |
Agricultural exploitation | Non-agricultural exploitation | ||
mg/kg d.m. | |||
Lead (Pb) | 500 | 1000 | 1500 |
Cadmium (Cd) | 10 | 25 | 50 |
Chromium | 500 | 1000 | 2500 |
Copper (Cu) | 800 | 1200 | 2000 |
Nickel (Ni) | 100 | 200 | 500 |
Mercury (Hg) | 5 | 10 | 25 |
Zinc (Zn) | 2500 | 3500 | 5000 |