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Reference type: Journal
Authors: Wang S, Liu L, Fang GZ, Zhang C, He JX
Article Title: Molecularly imprinted polymer for the determination of trace ractopamine in pork using SPE followed by HPLC with fluorescence detection.
Publication date: 2009
Journal: Journal of Separation Science
Volume: 32
Issue: (9)
Page numbers: 1333-1339.
DOI: 10.1002/jssc.200800565

Abstract: In this study, a molecularly imprinted functionalized polymer for the selective separation of ractopamine (RAC) was prepared by combining a surface molecular imprinting technique with a sol-gel method process. The polymer was evaluated by static, kinetic adsorption, and selective experiments. Results indicated that the molecularly imprinted polymer had high adsorption capacity, selective ability, and fast mass transfer rate. The polymer was applied for the determination of trace RAC through online SPE-HPLC. With a sample loading flow rate of 2 mL/min, the enhancement factor of 516.26 and the LOD (S/N = 3) of 4.6 ng/L were achieved, respectively, and the linear range of the calibration curve was 0.04-18 mug/L with r2 >0.99. The RAC in pork was determined at three spiked levels (0.5, 1, and 2 ng/g) with recoveries ranging from 55.86 to 67.28%
Template and target information: ractopamine, RAC
Author keywords: HPLC, molecular imprinting, Ractopamine, sol-gel, SPE


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