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Reference type: Journal
Authors: He HL, Li H, Gao YK, Chen D, Shi LY, Peng J, Du SH, Chen LN
Article Title: A Novel Molecularly Imprinted Polymer for the Solid-Phase Extraction of Tanshinones from Serum.
Publication date: 2015
Journal: Analytical Letters
Volume: 48
Issue: (1)
Page numbers: 47-60.
DOI: 10.1080/00032719.2014.930865

Abstract: A molecularly imprinted polymer (MIP) was synthesized by precipitation polymerization with tanshinone IIA as the template and used as an adsorbent for solid-phase extraction (SPE). A simulation was employed to predict the most suitable polymerization solvent, the functional monomer, and the molar ratio of template to monomer. The obtained imprinted materials were evaluated by transmission electron microscopy, scanning electron microscopy, rebinding experiments, exhibiting good morphology, and high binding to tanshinone IIA. Compared with nonimprinted polymers, the imprinted material exhibited a higher sorption capacity, up to 34.09 μmol g-1, and better selectivity for tanshinone IIA and its structural analogs. The imprinted polymer was successfully employed for SPE coupled with high-performance liquid chromatography for the determination of tanshinone IIA, cryptotanshinone, and tanshinone I in fortified serum. The mean recoveries were between 91.5% and 95.1% with relative standard deviations less than 4.9%. These results demonstrate a highly selective isolation and determination of tanshinones
Template and target information: tanshinone IIA, cryptotanshinone, tanshinone I
Author keywords: high-performance liquid chromatography, molecularly imprinted polymer, precipitation polymerization, Solid-phase extraction, Tanshinone IIA

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