基于氯化血红素复合材料的过氧亚硝酸阴离子电化学传感器的构建

发布时间：2018-02-25 04:05

本文关键词： 过氧亚硝酸阴离子氯化血红素聚三聚氰胺金纳米粒子碳纳米管电化学传感器　出处：《分析化学》2017年01期 　论文类型：期刊论文

【摘要】：构建了一种基于氯化血红素/金纳米粒子/聚三聚氰胺/多壁碳纳米管复合材料修饰玻碳电极的过氧亚硝酸阴离子电化学传感器,并成功用于过氧亚硝酸阴离子的检测。采用循环伏安法和电流-时间曲线考察了过氧亚硝酸阴离子在传感器上的电化学行为,并对传感器的制备条件及过氧亚硝酸阴离子的检测条件进行了优化。结果表明,碳纳米管滴涂量为5μL,金沉积时间为20 s,工作电位为0.8 V时,所制传感器对过氧亚硝酸阴离子的响应最大。在优化实验条件下,此传感器检测过氧亚硝酸阴离子的线性范围为1.0×10!5~3.5×10!4mol/L和3.5×10!4~1.1×10!3mol/L,灵敏度为0.13 A/(mol/L),检出限为1.2×10!7mol/L(S/N=3)。
[Abstract]:A peroxynitrite anion electrochemical sensor based on hemin / gold nanoparticles / melamine / multiwalled carbon nanotube composite modified glassy carbon electrode was constructed. The electrochemical behavior of peroxynitrite on the sensor was investigated by cyclic voltammetry and current-time curves. The preparation conditions of the sensor and the detection conditions of peroxynitrite anion were optimized. The results showed that the amount of droplet coating was 5 渭 L, the deposition time of gold was 20 s, and the working potential was 0.8 V. The sensor has the largest response to peroxynitrite anion. Under the optimized experimental conditions, the linear range of the sensor is 1.0 脳 10 ~ (-1) for the detection of peroxynitrite anion. 5, 3. 5 脳 10! 4 mol / L and 3.5 脳 10! 1. 1 脳 10! 3 mol / L, with a sensitivity of 0.13 A / L / L, and a detection limit of 1.2 脳 10! 7 mol / L, S / N, 3.
【作者单位】：河北科技大学理学院;河北医科大学基础医学院;
【基金】：河北省自然科学基金(No.B2016206150) 科技部中国-罗马尼亚国际合作项目(No.41-19)资助
【分类号】：O657.1

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