Organometallic Au(III) Based Electrochemical Sensor with Wide Anodic Potential Window for Sensitive and Selective Detection of Ochratoxin A,Electroanalysis

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Organometallic Au(III) Based Electrochemical Sensor with Wide Anodic Potential Window for Sensitive and Selective Detection of Ochratoxin A
Electroanalysis ( IF 2.7 ) Pub Date : 2021-07-19 , DOI: 10.1002/elan.202100238
Yuan Xiang _{1,

2} , Hao Huang _{1,

2} , Dan Wang ₃ , Juan Du ₃ , Dongping Wu ₂ , Wanming Xiong ₂ , Yanping Hong ₃ , Jinyin Chen _{1,

4} , Xiaoning Liao _{1,

2}

Affiliation

Herein, an organometallic Au(III) catalyst was easily prepared via self-assembly method using chloroauric acid (HAuCl₄) and cetyltrimethylammonium bromide (CTAB). The electrode fabricated by the catalyst not only shows extended anodic potential window compared to that of Au nanoparticle-based electrode, but also possess the high electrocatalytic activity in the selective oxidation of Ochratoxin A. Under optimized conditions, the modified electrode exhibits a wide linearity range from 1.0×10⁻⁷ to 1.0×10⁻⁵ mol/L and a low detection limit of 2.9×10⁻⁸ mol/L (S/N=3). Furthermore, the electrochemical sensor possesses good recoveries between 93.5 % and 98.2 % in real sample analysis, indicating high accuracy in real sample analysis.

中文翻译：

具有宽阳极电位窗的有机金属 Au(III) 基电化学传感器，用于灵敏和选择性检测赭曲霉毒素 A

在此，使用氯金酸 (HAuCl ₄ ) 和十六烷基三甲基溴化铵 (CTAB)通过自组装方法很容易制备有机金属 Au(III) 催化剂。与Au纳米颗粒电极相比，该催化剂制备的电极不仅显示出更大的阳极电位窗口，而且在选择性氧化赭曲霉毒素A方面具有高电催化活性。在优化条件下，修饰电极表现出较宽的线性范围从1.0×10 ^-7到1.0×10 ^-5 mol/L，检测下限为2.9×10 ^-8 mol/L（S/N=3）。此外，电化学传感器在实际样品分析中具有93.5%至98.2%的良好回收率，表明在实际样品分析中具有较高的准确度。

更新日期：2021-07-19

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