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Table 2 Concentrations of essential macro and trace elements in clay samples

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 Element

Concentration (mg/Kg)

(Mean ± SD)

Recommended Dietary Intake (RDI), WHO [28]

Iron

1.38 ± 1.5

18 mg

Copper

2.40 ± 1.5

0.9 mg

Zinc

7.74 ± 1.5

11 mg

Potassium

4.01 ± 1.0

3100–3500 mg

Magnesium

13.24 ± 2.2

280–350 mg

Sodium

13.76 ± 2.1

500–2400 mg