From: Mucor pusillus immobilized Amberlite XAD-4 biocomposites for preconcentration of heavy metal ions by solid-phase extraction method
Element
Certified (mg/kg)a
Found (mg/kg)
Relative error, %
Cd
1.52 ± 0.04
1.45 ± 0.02
− 5
Cu
4.70 ± 0.14
4.52 ± 0.15
− 4
Pb
4.0 ± 0.1
3.72 ± 0.08
− 7