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首页> 外文期刊>International Journal of Electrochemical Science >Electochemical Detection of Imidacloprid Using a Screen Printed Single Walled Carbon Nanotubes Coated with and Ionic Liquids
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Electochemical Detection of Imidacloprid Using a Screen Printed Single Walled Carbon Nanotubes Coated with and Ionic Liquids

机译：使用丝网印刷和离子液体涂覆的单壁碳纳米管对吡虫啉进行电化学检测

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The simple modification of a screen printed single walled carbon nanotubes with ionic liquid 1-butyl-3-metilimidazolium tetrafluorborate allowed the development of a fast and selective methodology todetermine imidacloprid (IMI). The morphological and conductive characteristics of the modifiedsurface were analyzed with scanning electron microscopy and electrochemical impedancespectroscopy. The modified surface showed great activity towards the reduction of IMI to -1.2 V. Theanalytical variables were optimized using linear sweep voltammetry at 0.1 V for 60s, obtaining a limitof detection of 0.21 mg L-1(0.82 μmol L-1). Relative standard deviation with six different electrodeswas of 2.6 % (n = 5). Finally, the potential interferers were studied and the sensor was applied in thedetermination of IMI using samples of commercial honey with recovery between 88.0 and 105.0 % forIMI.
机译：用离子液体四氟硼酸1-丁基-3-甲基咪唑鎓四氟硼酸酯对丝网印刷的单壁碳纳米管进行简单的修饰，从而可以开发出一种快速，选择性的方法来测定吡虫啉（IMI）。用扫描电子显微镜和电化学阻抗谱分析了改性表面的形貌和导电特性。改性后的表面对将IMI降低至-1.2 V表现出很大的活性。使用线性扫描伏安法在0.1 V下优化60s的分析变量，检测限为0.21 mg L-1（0.82μmolL-1）。六个不同电极的相对标准偏差为2.6％（n = 5）。最后，研究了潜在的干扰物，并使用商业蜂蜜样品将传感器应用于IMI的测定，IMI的回收率在88.0％至105.0％之间。

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