期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 39, 期 22, 页码 8958-8962出版社
AMER CHEMICAL SOC
DOI: 10.1021/es0505292
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A synthetic molecularly imprinted polymer (MIP) sorbent forestrogenic compounds was prepared using a noncovalent imprinting technique. MIP microspheres sized from 1 to 2 mu m were synthesized in acetonitrile by using alpha-estradiol as the template, acrylamide as the functional monomer, and trimethylpropanol trimethacrylate as the cross-linker. When compared with the nonimprinted polymer (NIP), the MIP showed outstanding affinity toward alpha-estradiol in aqueous solution with a binding site capacity (B-max) of 380 nmol mg(-1) MIP, imprinting effect of 35, and a dissociation constant (K-d) of 38 mu M. The MIP exhibited significant binding affinity toward other related estrogenic compounds such as beta-estradiol, diethylstilbestrol, estriol, and estrone, suggesting that this material may be appropriate for treating a complex mixture of estrogenic pollutants. The feasibility of removing estrogenic compounds from environmental water by the MIP was demonstrated using lake water spiked with alpha-estradiol. In addition, the MIP reusability without any deterioration in performance was demonstrated for at least five repeated cycles.
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