para-Nitrophenol (p-NP) is a high priority environmental pollutant. For the sake of safety, sensitive detection of its presence in water resources and food is highly important. The present article describes the use of copper metal nanoparticles for selective and sensitive electrochemical detection of p-NP in pure and real sample. For this the gold electrode was fabricated by polyvenylpyrrolidone stabilized copper metal nanoparticles (ca. 4 nm d.) via self-assembled 4,4′-bipyridine monolayer and characterized by microscopic and electrochemical techniques. The newly developed sensor permits for sensitive detection of p-NP in a linear concentration range of 1–500 μM with lowest detection limit of 0.34 nM and high sensitivities 247.1 μA cm−2 μM−1. The sensor electrode exhibited high stability, reproducibility, good selectivity in the presence of potential interfering agents and had an excellent capability for the selective determination of p-NP in river water without preliminary treatments.

中文翻译：

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铜金属纳米粒子修饰金电极电化学检测对硝基苯酚

对硝基苯酚 (p-NP) 是一种高度优先的环境污染物。为了安全起见，灵敏检测其在水资源和食物中的存在非常重要。本文描述了使用铜金属纳米粒子对纯样品和真实样品中的 p-NP 进行选择性和灵敏的电化学检测。为此，金电极由聚乙烯吡咯烷酮稳定的铜金属纳米粒子（约 4 nm d.）通过自组装 4,4'-联吡啶单层制成，并通过显微和电化学技术表征。新开发的传感器允许在 1–500 μM 的线性浓度范围内灵敏检测 p-NP，最低检测限为 0.34 nM，高灵敏度为 247.1 μA cm-2 μM-1。传感器电极表现出高稳定性、重现性、