Fig. 1From: Mucor pusillus immobilized Amberlite XAD-4 biocomposites for preconcentration of heavy metal ions by solid-phase extraction methodEffects of pH on the recovery of Cd, Cu, and Pb, 0.2 μg/mL; solid phase, 200 mg; sample volume 500 mL; flow rate 3 mL/min; elution solution 10 mL of 1 M HCI)Back to article page