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The study of core-shell molecularly imprinted polymers of 17β-estradiol on the surface of silica nanoparticles.
- Source :
-
Biosensors & bioelectronics [Biosens Bioelectron] 2011 Jan 15; Vol. 26 (5), pp. 2791-5. Date of Electronic Publication: 2010 Oct 31. - Publication Year :
- 2011
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Abstract
- In this paper, highly selective core-shell molecularly imprinted polymers of 17β-estradiol on the surface of silica nanoparticles (SiO(2)@E2-MIPs) were prepared. The SiO(2)@E2-MIPs were characterized by Fourier transform infrared spectrometer (FT-IR), transmission electron microscope (TEM), dynamic adsorption and static adsorption tests. The sorption capacity of the SiO(2)@E2-MIPs were nearly 5 times that of the non-imprinted polymers (NIPs), and it only took 25 min to achieve the sorption equilibrium. It indicated that the SiO(2)@E2-MIPs exhibited a high selectivity, large adsorption capacity and fast kinetics. When the SiO(2)@E2-MIPs were used as dispersive solid-phase extraction (dSPE) absorbents to selectively enrich and determine estrogens in duck feed, the average recoveries of E2 and estriol (E3) were higher than 96.74% and 72.07%, respectively, and the relative standard deviations (RSD) of E2 and E3 were less than 1.61% and 3.28%, respectively. The study provides an effective method for the separation and enrichment of estrogens in the complex matrix samples by the SiO(2)@E2-MIPs.<br /> (Copyright © 2010 Elsevier B.V. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1873-4235
- Volume :
- 26
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Biosensors & bioelectronics
- Publication Type :
- Academic Journal
- Accession number :
- 21094594
- Full Text :
- https://doi.org/10.1016/j.bios.2010.10.045