期刊论文

Aluminum Doped Surface Imprinted Polymer Modified Electrode for Determination of Ronidazole Residue in Food

中文

分析测试学报

1004-4957

2016

35

8

993-998

10.3969/j.issn.1004-4957.2016.08.011

南华大学研究生科研创新项目（2015XCXl6） 湖南省科技厅项目（2013FJ3028）

本校为第一机构

以罗硝唑(Ronidazole,RNZ)为模板,3-氨丙基三乙氧基硅烷为功能单体,Al(Ⅲ)为路易斯酸掺杂剂,用溶胶-凝胶法制备核壳型磁性分子印迹聚合物,借助磁力作用将其修饰于磁性玻碳电极表面,制得RNZ电化学印迹传感器。以透射电镜、红外光谱、X-射线衍射及电化学方法等对该传感器进行表征,并对影响传感器性能的主要参数进行优化。结果表明,相比基于非掺杂印迹聚合物和非分子印迹聚合物的传感器,铝掺杂印迹传感器对罗硝唑具有更强的结合能力和更高的识别选择性。用差分脉冲溶出伏安法进行定量测定时,RNZ的还原峰电流与其浓度在0.05 ~ 50.0 μmol/L范围内呈良好线性关系(r = 0.997 3),检出限为0.015 μmol/L...

An electrochemical sensor for the determination of ronidazole （RNZ） was developed based on a magnetic glassy carbon electrode modified with AI（Ⅲ） doped core-shell magnetic surface molec- ularly imprinted polymer （MMIP）, which was prepared via the sol-gel method using RNZ as tem- plate, 3-aminopropyhriethoxysilane as functional monomer, orthosilicate as cross-linker, and Al3＋ as dopant to generate Lewis acid sites in the silica matrix for the metal coordinate interactions with the template RNZ. The component, morphology of MMIP and the p...