Fast preconcentration of Pb(II) and Cu(II) in liquid milk using syringe solid-phase extraction on alginate and PVA biopolymer loaded with activated carbon

The simultaneous preconcentration and determination of Pb(II) and Cu(II) were afforded by a syringe Solid Phase Extraction (SSPE) technique, which was developed and described for the first time, exploiting alginate/carbon/PVA...