Synthesis and characterization of highly selective and sensitive ion imprinted polymer based on dithizone for determination of lead ions

In this work, a novel Pb (II) ion-imprinted polymer sorbent was synthesized by a surface imprinting technique for selective recognition and sensitive determination of lead ions. For this purpose, copolymerization of Pb (II)–dithizone complex was performed using acrylamide, N,N-methylene bis acrylamide and azobisisobutyronitrile (AIBN) as functional monomer, cross-linker and initiator, respectively. The final products were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), Field Emission Scanning Electron Microscopy (FESEM) and X-ray diffraction (XRD). The results indicate the novel sorbent presents a high affinity for heavy metal due to the presence of several good extractive sites (S and N) which are introduced to the synthesized IIP.