Table 3 Mean concentrations of toxic trace elements in clay sample
Mineral element | Mean Concentration (Mean ± SD) | WHO/FAO PMTDI (μg/Kg BW/day) | PMTDI for 60 |
|---|---|---|---|
Arsenic | 1.63 ± 0.03 μg/Kg | 3.0 | 180 |
Manganese | 4.72 ± 0.8 mg/Kg | 4.9 mg/Kg | 294 |
Lead | 0.53 ± 0.02 mg/Kg | 3.0 | 180 |
Nickel | 1.85 ± 0.3 mg/Kg | 5.0 | 300 |