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Table 3 Mean concentrations of toxic trace elements in clay sample

From: Potential health risk assessment of toxic metals contamination in clay eaten as pica (geophagia) among pregnant women of Ho in the Volta Region of Ghana

Mineral elementMean Concentration
(Mean ± SD)
WHO/FAO PMTDI
(μg/Kg BW/day)
PMTDI for 60
Arsenic1.63 ± 0.03 μg/Kg3.0180
Manganese4.72 ± 0.8 mg/Kg4.9 mg/Kg294
Lead0.53 ± 0.02 mg/Kg3.0180
Nickel1.85 ± 0.3 mg/Kg5.0300