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首页> 外文期刊>Electroanalysis >Voltammetric determination of metamitron with an electrogenerated molecularly imprinted polymer microsensor
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Voltammetric determination of metamitron with an electrogenerated molecularly imprinted polymer microsensor

机译：电生分子印迹聚合物微传感器伏安法测定偏甲替隆

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摘要

A molecularly imprinted polymer microsensor was synthesized onto the surface of a carbon fiber microelectrode (CFME) by cyclic voltammetry between -0.1 V and +1.35 V at a scan rate of 50 mV s(-1). The monomers aniline and o-phenylenediamine (o-PD) were electrocopolymerized in the presence of the template (metamitron) in an aqueous medium of 0.1 M H2SO4. In order to obtain a sensor with the highest number of imprinted sites as possible, different experiments related to the polymerization process were carried out. The response of the synthesized microsensor was linear to the metamitron in the range between 10(-6) and 10(-4) with sensitivity of 0.143 nA mu M-1 with good repeatability (< 9% RSD). Employing these experimental conditions, the microsensor was able to distinguish the metamitron from other closely related triazines like metribuzin or isomethiozin.
机译：分子印迹聚合物微传感器通过循环伏安法在-0.1 V和+1.35 V之间以50 mV s（-1）的扫描速度合成到碳纤维微电极（CFME）的表面上。在模板（metamitron）存在下，将单体苯胺和邻苯二胺（o-PD）在0.1 M H2SO4的水介质中进行电聚合。为了获得具有尽可能高的压印位点数量的传感器，进行了与聚合过程有关的不同实验。合成的微传感器的响应在10（-6）到10（-4）范围内对间位子呈线性，灵敏度为0.143 nAμM-1，重复性好（RSD <9％）。利用这些实验条件，该微传感器能够将metamitron与其他紧密相关的三嗪类药物如metribuzin或isoomethiozin区分开。

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