A new electrochemical sensor based on nanostructured carbon paste electrodes (CPEs) is developed for the sensitive detection of Isoproturon in water. The CPEs were nanostructured by incorporation of carbon nanotubes (NTCs) and synthetized copper oxide nanoparticles (CuO). They were characterized using the X‐ray diffraction spectroscopy (XRD), scanning electron microscopy (SEM) and voltammetric methods. Electrochemical experiments showed that the adsorption of Isoproturon on to (GC‐NTC‐CuO)‐CPE, associated with nanomaterials (NTCs and CuO), provided remarkable analytical performances of the sensor such as a large quantification range from 1 to 200 μg L⁻¹ with a detection limit of 0.1 μg L⁻¹ of Isoproturon and no interferences of some another pesticides tested (specificity of ISO adsorption in acidified water). The tests carried out on real samples of water are conclusive. The analytical performances of the sensor showed that it is suitable for the specific determination of pesticide traces in water.

中文翻译：

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纳米结构化修饰碳糊电极作为痕量痕量水中痕量分析的伏安传感器

开发了一种基于纳米结构碳糊电极（CPE）的新型电化学传感器，用于灵敏检测水中的异丙隆。通过掺入碳纳米管（NTC）和合成的氧化铜纳米颗粒（CuO）纳米结构化了CPE。使用X射线衍射光谱（XRD），扫描电子显微镜（SEM）和伏安法对它们进行了表征。电化学实验表明，异丙隆在与纳米材料（NTC和CuO）结合的（GC-NTC-CuO）-CPE上的吸附提供了出色的传感器分析性能，例如从1到200μgL ^-1的大定量范围检出限为0.1μgL ^-1异丙隆的残留，并且没有受到其他农药测试的干扰（ISO在酸化水中的吸附特异性）。对真实水样进行的测试是结论性的。传感器的分析性能表明，该传感器适用于水中痕量农药的特定测定。