Fig. 5From: Determination of some heavy metals from aqueous solutions using modified Amberlite XAD-4 resin by selective solid-phase extractionEffect of flow rate on the recovery of Pb(II) and Cd(II) by modified Amberlite XAD-4 resin (adsorbent amount: 0.2, pH:5, initial metal concentration: 20Â mg/L)Back to article page