From: Determination of some heavy metals from aqueous solutions using modified Amberlite XAD-4 resin by selective solid-phase extraction
Element
Added (μg)
Recoverya (%)
Pb(II)
10
94.5 ± 0.2
20
95.7 ± 0.3
30
97.4 ± 0.4
Cd(II)
95.4 ± 0.4
96.8 ± 0.3
98.4 ± 0.2