Abstract:

By using lead ion(II) as the template molecule, sodium vinylbenzoic- acid as the functional monomer and divinyl benzene as the cross-linking monomer, lead molecularly imprinted polymers (Pb-MIPS) were synthesized by preassembling and surface-imprinting technology. In this paper, the structure of Pb-MIPS was chara- cterized with FT-IR spectrometer and specific surface area apparatus, and the adsorp- tion properties and selective recognition of Pb-MIPS for lead ion was also studied. The experimenttal results show that Pb-MIPS has a high adsorption capacity and good selective recognition for lead ion,and the maximum adsorption capacity of Pb-MIPS is 725μg/g. Pb-MIPS was applied to determination of lead in water sample, the results show that the GA atomic adsorption measurement ability for trace lead in sample can be obviously improved.

Key words: Molecular imprinting polymer, Lead, Sodium vinylbenzoic- acid, Adsorption, Selective recognition