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首页> 外文期刊>International Journal of Electrochemical Science >Electrocatalytic Characteristic of Carbon Nanotubes/Glutamine/Nafion Modified Platinum Electrode in Development of Sensor for Determination of As(III)
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Electrocatalytic Characteristic of Carbon Nanotubes/Glutamine/Nafion Modified Platinum Electrode in Development of Sensor for Determination of As(III)

机译：碳纳米管/谷氨酰胺/ Nafion修饰的铂电极在测定As（III）的传感器中的电催化特性

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摘要

Electrochemical sensor for As(III) was prepared by using carbon nanotubes/amino acid modifiedplatinum electrode using cyclic voltammetry. Experimental conditions such as pH, supportingelectrolyte and scan rate were optimized. It was observed that the modified electrode has significantsuperior analytical performance in determination of As(III) compared to the unmodified electrode. Thedetermination of As(III) by using modified electrode was reproducible with R.S.D of 7.3%.Determination of As(III) was observed to be free of metal ion interference at pH 4.0 acetate buffer.The electrocatalytic redox peak current of As(III) showed a linear response towards different-2concentration of As(III) and linear calibration curves were obtained in the range of 0.110 to-2 -850.510 M. The sensitivity response is 100 A/M with limit of detection 3.6310 M. Thisdeveloped method was applied for determination of As(III) in some real samples, such as industrialwaste water from wood industry and electroplating industry and a good agreement was obtainedbetween the proposed method and ICP-OES based on the analysis of the waste water samples.
机译：用碳纳米管/氨基酸修饰的铂电极通过循环伏安法制备了As（III）的电化学传感器。优化了pH，支持电解质和扫描速率等实验条件。观察到，与未修饰的电极相比，修饰的电极在测定As（III）方面具有显着优异的分析性能。修饰电极测定As（III）的方法可重现，相对标准偏差（RSD）为7.3％。在pH 4.0的乙酸盐缓冲液中测定As（III）不受金属离子干扰.As（III）的电催化氧化还原峰值电流显示在0.110至-2 -850.510 M的范围内获得了对不同浓度的As（III）的线性响应和线性校正曲线。灵敏度响应为100 A / M，检出限为3.6310M。在一些实际样品中，如木材工业和电镀工业废水中的砷（III）的测定，在对废水样品进行分析的基础上，该方法与ICP-OES之间取得了很好的一致性。

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