Abstract In this work, we presented a simple and enzyme-free electrochemiluminescence chlorpyrifos pesticide sensor based on decorated Ni-foam with zinc oxide (ZnO) nanoparticles in the presence of peroxydisulfate as the strong co-reactant. To control of morphology of the Zinc oxide nanoparticles, the silica film was utilized as an effective template. The surface characterization of the modified electrode was performed by electrochemical impedance spectroscopy, BET and X-Ray diffraction analysis, field emission scanning electron microscopy and energy-dispersive X-ray tools. The developed ECL-based pesticide sensor showed excellent proficiency towards accurate detection of the chlorpyrifos with good reproducibility and long-term durability. A wide linear dynamic range was obtained for determination of chlorpyrifos within 1.0×10−14 M to 8.5×10−9 M with a low detection limit (3σ/m) of 9.5×10−16 M. The ultra-sensitive ECL technique was truly utilized for ultra-trace analysis of chlorpyrifos in some water and fruits samples. These admissible outcomes presented a promising pathway in the detection of chlorpyrifos in real samples.

中文翻译：

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基于ZnONPs/Ni-foam和K2S2O8的超灵敏电化学发光平台，用于检测毒死蜱

摘要 在这项工作中，我们提出了一种简单且无酶的电化学发光毒死蜱农药传感器，该传感器基于装饰镍泡沫和氧化锌 (ZnO) 纳米颗粒，在过硫酸盐作为强共反应物的情况下。为了控制氧化锌纳米粒子的形态，二氧化硅膜被用作有效的模板。改性电极的表面表征通过电化学阻抗谱、BET 和 X 射线衍射分析、场发射扫描电子显微镜和能量色散 X 射线工具进行。开发的基于 ECL 的农药传感器在准确检测毒死蜱方面表现出出色的能力，具有良好的重现性和长期耐用性。在 1.0×10-14 M 至 8 范围内测定毒死蜱获得了很宽的线性动态范围。5×10-9 M，低检出限(3σ/m) 9.5×10-16 M。超灵敏ECL技术真正应用于部分水体和水果样品中毒死蜱的超痕量分析。这些可接受的结果为检测实际样品中的毒死蜱提供了一条有希望的途径。