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The EU Council standard limit for heavy metals in soil and biosolid for agricultural applications.
| Parameter | Soil (mg/kg dm) | Sludge (mg/kg dm) | Loading Amount (kg/ha/yr) |
|---|---|---|---|
| Hg | 1–1.5 | 16–25 | 0.1 |
| Cd | 1–3 | 20–40 | 0.15 |
| B | 30–75 | 300–400 | 3.0 |
| Cu | 50–140 | 1000–1750 | 12.0 |
| Pb | 50–300 | 750–1200 | 15.0 |
| Zn | 150–300 | 2500–4000 | 30.0 |
