| 吴伟平,周洁,方玉婷,刘扬,顾海鹰.化学通报,2016,79(11):1041-1045,1057. |
| 基于Fe3O4@Ag壳核结构磁性纳米复合物的对杀螟硫磷的电化学传感 |
| A Sensitive Electrochemical Sensor of Fenitrothion Based on Fe3O4@Ag Nanoparticles |
| 投稿时间：2015-09-02 修订日期：2015-11-05 |
| DOI： |
| 中文关键词: Fe3O4@Ag磁性纳米粒子 电化学传感器 杀螟硫磷 |
| 英文关键词:Fe3O4@Ag nanoparticles, Electrochemical sensor, Fenitrothion |
| 基金项目:国家自然科学基金项目（.21475070, 21175075, 20875051, 20675042, 81202249） |
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| 中文摘要: |
| 制备一种壳核结构的Fe3O4@Ag磁性纳米粒子，将该纳米粒子通过壳聚糖（CS）修饰在玻碳电极（GCE）表面，制备了对杀螟硫磷有灵敏电化学传感的Fe3O4@Ag/CS/GCE。应用透射电镜（TEM）和紫外可见光谱（UV-VIS），对Fe3O4@Ag纳米粒子进行表征。运用电化学交流阻抗（EIS）、循环伏安法（CV）和时间电流法（I-T）来研究杀螟硫磷电化学特性。研究发现，在1.74×10-7～3.27×10–4 mol/L浓度范围内，该传感器可以实现对杀螟硫磷的快速检测，检测限为5.7×10-8 mol/L（S/N=3） |
| 英文摘要: |
| A sensitive electrochemical sensor which was used to research fenitrothion electrochemical properties was prepared by modifying Fe3O4@Ag core/shell nanoparticles on GCE by CS. The Fe3O4@Ag magnetic nanoparticles were characterized by transmission electron microscopy (TEM)、UV-visible spectra (UV-VIS). The electrochemical properties of fenitrothion were showed by electrochemical impedance (EIS), cyclic voltammetry (CV), and time current method (I-T). The results showed that the modified GCE responsed to fenitrothion with the linear ranges were 1.74×10-7～3.27×10–4 mol/L, and the lower limit of detection was 5.7×10-8 mol/L (S/N=3). |
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