School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China.
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China.
Food Chem. 2017 Feb 15;217:620-627. doi: 10.1016/j.foodchem.2016.09.028. Epub 2016 Sep 8.
In this study, an effective and precise fluorescent molecularly imprinted polymers (FMIPs) for the determination of Beta-Cyfluthrin (BC) was synthesized via precipitation polymerization with SiO2 as the carrier, BC as the target molecule, ally fluorescein as the functional monomer, trimethylolpropane trimethacrylate (TRIM) as the crosslinker. Moreover, the characteristic of material has been measured by FTIR, TEM, SEM, TGA, LSCM and fluorescence spectrophotometer. Average diameter and shell thickness of as-synthesized microspheres were 300nm and 50nm, respectively. An excellent linear relationship of SiO2-MPTMS@FMIPs with a correlation coefficient of 0.9919 could be gained covering a wide concentration range of 10.11-80nM described by the Stern-Volmer equation. The limit of detection (LOD) was evaluated with the equation LOD=3σ/S and was found to be 10.11nM. The study demonstrated that SiO2-MPTMS@FMIPs could improve the determination for BC and illustrated the good prospects of SiO2-MPTMS@FMIPs for BC detection in agricultural products.
在这项研究中，通过沉淀聚合合成了一种高效、精确的用于测定β-氯氟氰菊酯（BC）的荧光分子印迹聚合物（FMIPs），以 SiO2 为载体，BC 为目标分子，烯丙基荧光素为功能单体，三羟甲基丙烷三甲基丙烯酸酯（TRIM）为交联剂。此外，还通过 FTIR、TEM、SEM、TGA、LSCM 和荧光分光光度计对材料的特性进行了测量。合成的微球的平均直径和壳厚度分别为 300nm 和 50nm。通过 Stern-Volmer 方程描述的 10.11-80nM 宽浓度范围内，SiO2-MPTMS@FMIPs 具有极好的线性关系，相关系数为 0.9919。通过方程 LOD=3σ/S 评估检测限（LOD），发现其为 10.11nM。该研究表明，SiO2-MPTMS@FMIPs 可以提高 BC 的测定效率，并说明了 SiO2-MPTMS@FMIPs 在农产品中检测 BC 的良好前景。
