Table 5 Maximum allowable concentrations of some heavy metals in soil and vegetable tissues (leafy vegetables)
Cd | Pb | As | Ni | Cr | Co | Zn | Cu | Mn | |
|---|---|---|---|---|---|---|---|---|---|
In plant (mg kg−1 DW) | 2 | 5 | 4.3 | 15 | 5 | 5 | 150 | 50 | 150 |
In soil (mg kg−1) | 3 | 100 | 20 | 50 | 100 | 50 | 300 | 120 | 400 |
Cd | Pb | As | Ni | Cr | Co | Zn | Cu | Mn | |
|---|---|---|---|---|---|---|---|---|---|
In plant (mg kg−1 DW) | 2 | 5 | 4.3 | 15 | 5 | 5 | 150 | 50 | 150 |
In soil (mg kg−1) | 3 | 100 | 20 | 50 | 100 | 50 | 300 | 120 | 400 |