期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 186, 期 2-3, 页码 1513-1519出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2010.12.026
关键词
Molecularly imprinted polymers; Pseudo template; Estrogen; Dispersive solid-phase extraction; Chicken tissue
资金
- National Natural Science Foundation of China [20875048, 30801558]
- Natural Science Foundation of Jiangsu Province [BK2008439]
To assess the potential risks associated with the environmental exposure of steroid estrogens, a novel highly efficient and selective estrogen enrichment procedure based on the use of molecularly imprinted polymer has been developed and evaluated. Herein, analogue of estrogens, namely 17-ethyl estradiol (EE2) was used as the pseudo template, to avoid the leakage of a trace amount of the target analytes. The resulting pseudo molecularly imprinted polymers (PMIPs) showed large sorption capacity, high recognition ability and fast binding kinetics for estrogens. Moreover, using these imprinted particles as dispersive solid-phase extraction (DSPE) materials, the amounts of three estrogens (E-1, E-2 and E-3) which were detected by HPLC-UV from the chicken tissue samples were 0.28, 0.31 and 0.17 mu g g(-1), and the recoveries were 72.5-78.7%, 90.3-95.2% and 80.5-83.6% in spiked chicken tissue samples with RSD < 7%, respectively. All these results reveal that EE2-PMIPs as DSPE materials coupled with HPLC-UV could be applied to the highly selective separation and sensitive determination of trace estrogens in chicken tissue samples. (C) 2010 Elsevier B.V. All rights reserved.
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