Heavy metals | Final soil (mg/kg) | Spiked heavy metal accumulation (mg/kg) | Soil limit (mg/kg)a | Food limit (mg/kg) | |||
---|---|---|---|---|---|---|---|
Water spinach | Okra | Water spinach | Okra | Msiab | FAO/WHOc | ||
Pb | 0.622 | 1.163 | 30.31 | 18.51 | 10.4 | 2 | 5 |
Zn | 0.187 | 0.151 | 35.10 | 5.18 | 21.9 | 40 | 60 |
Cu | 0.408 | 0.094 | 18.87 | 2.62 | 13.8 | 30 | 40 |