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首页> 外文期刊>Journal of Applied Polymer Science >Construction of a novel sensor based on electropolymerization of carmine for voltammetric determination of 4-nitrophenol
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Construction of a novel sensor based on electropolymerization of carmine for voltammetric determination of 4-nitrophenol

机译：基于胭脂红电聚合的伏安法测定4-硝基苯酚的新型传感器的构建

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摘要

4-Nitrophenol (4-NP) has been determined with voltammetric technique based on a novel sensor fabricated by electropolymerization of carmine on a glassy carbon electrode (GCE). An obvious reduction peak located at about -0.700 V and a couple of redox peaks that were not well-defined were observed in the potential range of -1.00 to 0.600 V. Compared with its voltammetric behavior on a bare GCE, the reduction peak potential shifted positively and the peak current increased significantly. All experimental parameters were optimized and linear sweep voltammetry was proposed for its determination. In the optimal conditions, the reduction peak current was proportional to the 4-NP concentration over the concentration range from 5.00 x 10(-8) to 1.00 x 10(-5) mol L-1, and the detection limit was 1.00 x 10(-8) mol L-1 after 200 s of accumulation. The high sensitivity and selectivity of the sensor was demonstrated by its practical application for the determination of trace amounts of 4-NP in lake water. (c) 2006 Wiley Periodicals, Inc.
机译：4-硝基苯酚（4-NP）已通过伏安技术确定，该技术基于将胭脂红在玻璃碳电极（GCE）上进行电聚合而制得的新型传感器。在-1.00至0.600 V的电位范围内观察到明显的还原峰，位于-0.700 V处，并且观察到几个氧化还原峰，未明确定义。与在裸GCE上的伏安行为相比，还原峰电位发生了变化正电流，峰值电流明显增加。优化了所有实验参数，并提出了线性扫描伏安法进行测定。在最佳条件下，在5.00 x 10（-8）mol至1.00 x 10（-5）mol L-1的浓度范围内，还原峰电流与4-NP浓度成正比，检测极限为1.00 x 10 （-8）mol L-1累积200 s后。该传感器的高灵敏度和选择性通过其在测定湖水中痕量4-NP的实际应用中得到了证明。 （c）2006年Wiley Periodicals，Inc.

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