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首页> 外文会议>International Conference on Materials Science and Engineering Technology >Construction and Application of Molecularly Imprinted Film Sensor on Determination of Chlorpyrifos in Water
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Construction and Application of Molecularly Imprinted Film Sensor on Determination of Chlorpyrifos in Water

机译：分子印迹薄膜传感器在水中测定紫外线的构建与应用

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Molecularly imprinted microspheres for recognition of chlorpyrifos were prepared by thermal initiation and precipitation polymerization, and were characterized using scanning electron microscope and infrared spectroscopy. Binding characteristics of the microspheres were also investigated. Sensitive film electrode of chlorpyrifos was prepared using the microspheres above on the surface of gold electrode by spin coating. Electrochemical sensor was constructed with the electrode prepared above as recognition element, and the response characteristics of the sensor to chlorpyrifos in water were investigated based on constant-current potentiometry. It was shown that a reasonable linear response curve between potential and concentration was obtained from 1.0×10~(-12) mol/L to 2.0×10~(-8) mol/L, with a detection limit of 1.0×10~(-13)mol/L. The suitable pH was 2.2～3.4，and response time was 10 min. The imprinted electrode showed relatively high selectivity to chlorpyrifos and was applied to the analysis of chlorpyrifos in the simulated river samples with recovery rates ranging from 89% to 105%．
机译：通过热引发和沉淀聚合制备用于识别氯吡啶的分子印迹微球，并使用扫描电子显微镜和红外光谱表征。还研究了微球的结合特征。通过旋涂，使用上面的微球制备含紫紫外异花的敏感膜电极。电化学传感器用上面制备的电极作为识别元件构成，并基于恒流电位测定，研究了传感器对水中紫外线的响应特性。结果表明，从1.0×10〜（-12）mol / l至2.0×10〜（-8）mol / l，获得的电位和浓度之间的合理线性响应曲线，检测限为1.0×10〜（ -13）mol / l。合适的pH为2.2〜3.4，响应时间为10分钟。印迹电极显示对紫外线的相对高的选择性，并应用于模拟河流样品中紫外线的分析，回收率范围为89％至105％。

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