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Curcumin-enhanced MOF electrochemical sensor for sensitive detection of methyl parathion in vegetables and fruits
Microchemical Journal ( IF 4.9 ) Pub Date : 2022-11-15 , DOI: 10.1016/j.microc.2022.108182
Shuo Duan , Xuyue Wu , Zaixi Shu , Anhong Xiao , Bo Chai , Fuwei Pi , Jiahua Wang , Huang Dai , Xiaodan Liu

As a typical organophosphorus pesticide, the widespread abuse of methyl parathion (MP) has seriously threatened the environment and human health. To realize the sensitive detection of MP, an electrochemical sensor based on Metal-Organic Framework UiO-66(Zr) loaded curcumin(CCM) was designed. UiO-66 with high porosity for adsorption property and CCM with unique electrochemical activity conspired to improve the sensitivity of the electrochemical sensor. The result indicated that the CCM/UiO-66 electrode was well fabricated and exhibited an enhanced electrochemical response to MP. Under optimal conditions, the CCM/UiO-66 electrode extended a wide linear range from 20 ng mL-1 to 20000 ng mL-1 and a low limit of detection of 0.98 ng mL-1. The fabricated electrode also showed excellent reproducibility and stability. Additionally, the electrode demonstrated outstanding sensing capabilities in the electrochemical detection of MP in vegetables and fruits samples.



中文翻译:

姜黄素增强型 MOF 电化学传感器用于蔬菜和水果中甲基对硫磷的灵敏检测

作为典型的有机磷农药,甲基对硫磷(MP)的广泛滥用严重威胁着环境和人类健康。为实现对MP的灵敏检测,设计了一种基于金属有机骨架UiO-66(Zr)负载姜黄素(CCM)的电化学传感器。具有高孔隙率吸附性能的UiO-66和具有独特电化学活性的CCM共同提高了电化学传感器的灵敏度。结果表明,CCM/UiO-66 电极制作精良,对 MP 表现出增强的电化学响应。在最佳条件下,CCM/UiO-66 电极扩展了从 20 ng mL -1到 20000 ng mL -1的宽线性范围和 0.98 ng mL -1的检测下限. 制造的电极还表现出优异的重现性和稳定性。此外,该电极在蔬菜和水果样品中 MP 的电化学检测中表现出出色的传感能力。

更新日期:2022-11-16
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