writer：Fangfang Chen, Jingjing Zhang, Minjun Wang and Jie Kong*
keywords：Magnetic molecularly imprinted polymers，Synthetic estrogens，Reversible addition-fragmentation chain transfer polymerization，Water treatment
source：期刊
specific source：Journal of Separation Science, 2015, DOI: 10.1002/jssc.201500407 (Cover Story)
Issue time：2015年

Magnetic molecularly imprinted polymers have attracted significant interest caused by their multifunctionality of selective recognition of target molecules and rapid magnetic response. In this contribution, the magnetic molecularly imprinted polymers were synthesized via surface-initiated reversible addition addition-fragmentation chain transfer polymerization using diethylstilbestrol as the template for enrichment of synthetic estrogens. The uniform imprinted surface layer and the magnetic property of the magnetic molecularly imprinted polymers favored a fast binding kinetics and rapid analysis of target molecules. The static and selective binding experiments demonstrated a desirable adsorption capacity and good selectivity of the magnetic molecularly imprinted polymers in comparison to magnetic non-molecularly imprinted polymers. Accordingly, a corresponding analytical method was developed in which magnetic molecularly imprinted polymers were employed as magnetic solid-phase extraction materials for the concentration and determination of four synthetic estrogens (diethylstilbestrol, hexestrol, dienestrol, and bisphenol A) in fish pond water. The recoveries of these synthetic estrogens in spiked fish pond water samples ranged from 61.2% to 99.1% with a relative standard deviation of lower than 6.3%. This study provides a versatile approach to prepare well-defined magnetic molecularly imprinted polymers sorbents for the analysis of synthetic estrogens in water solution.

全文链接：http://onlinelibrary.wiley.com/doi/10.1002/jssc.201500407/abstract