Study and application of selective adsorption characteristics of the Lead(II)ion imprinted polymer

The ion imprinted polymer synthesized with molecular technique was prepared by bulk polymerization using lead(Ⅱ)as a template,methacrylic acid as a functional monomer,2,2′-Azobisisobutyronitrile as a initiator,ethylene glycol dimethacrylate as a crosslinker.The chemical structure was characterized by UV spectrum and IR spectroscopy.The adsorption property and selectivity of lead ion imprinted polymer was studied by static equilibrium adsorption method.The results showed that compared with non-imprinted polymer,the imprinted polymer had better adsorption property and selectivity to lead ion.The maximum static adsorption capacity of the IIP was 19.44mg/g.The best acidity is pH=6.The sorption equilibrium was achieved in 7h.The static adsorption modulus was 1381ml/g and separate factor was 20.3.The ion-imprinted polymer can be used in preconcentration of lead ions'determination in environmental water samples with satisfactory results.