Upconversion Nanoparticles Capped with Molecularly Imprinted Polymer as Fluorescence Probe for the Determination of Ractopamine in Water and Pork

被引：0
作者：
Yiwei Tang
Min Li
Ziyuan Gao
Xiuying Liu
Xue Gao
Tao Ma
Xiaonan Lu
Jianrong Li
机构：
[1] Bohai University,College of Food Science & Project Engineering
[2] The University of British Columbia,Food, Nutrition, and Health Program, Faculty of Land and Food Systems
[3] Bohai University,Food Safety Key Lab of Liaoning Province
[4] Bohai University,National and Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products
来源：
Food Analytical Methods | 2017年 / 10卷
关键词：
Upconversion nanoparticles; Molecularly imprinted polymer; Fluorescent probe; Ractopamine;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A novel fluorescence probe was designed and synthesized to quantify ractopamine in foods using molecularly imprinted polymer (MIP) as a specific recognition element and YF3:Yb3+, Er3+ upconversion nanoparticles (UCNPs) as a fluorescence signaling component. The developed UCNP@MIP probe was characterized using X-ray powder diffraction, scanning electron microscopy, and thermogravimetric analysis. The fluorescence of UCNP@MIP probe was quenched specifically by ractopamine, and good linear regression ranging from 1.66 × 10−8 to 3.3 × 10−7 mol/L was obtained with the limit of detection of 8.6 × 10−10 mol/L. This method was further applied to determine ractopamine in water and pork samples. Recoveries between 76.61 and 88.97% were obtained with relative standard deviation ranging from 1.15 to 2.67% (n = 3). This UCNP@MIP probe combined high selectivity of MIP and high sensitivity of upconversion fluorophore and showed potential to determine various food chemical hazards.
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页码：2964 / 2973
页数：9
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