Table 1.

Binding capacities for copper and lead to Fe₃O₄ and Fe₂O₃ after 1 h of contact time at room temperature.

	Fe3O4		Fe2O3
Copper	37.04 mg/g	0.59 mmol/g	19.61 mg/g	0.31 mmol/g
Lead	166.67 mg/g	0.80 mmol/g	47.62 mg/g	0.23 mmol/g