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首页> 外文期刊>International Journal of Electrochemical Science >Development of Electrochemical Sensor for Detection of Mercury by Exploiting His-Phe-His-Ala-His-Phe-Ala-Phe Modified Electrode
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Development of Electrochemical Sensor for Detection of Mercury by Exploiting His-Phe-His-Ala-His-Phe-Ala-Phe Modified Electrode

机译：利用His-Phe-His-Ala-His-Phe-Ala-Phe修饰电极检测汞的电化学传感器的开发

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摘要

A sensitive voltammetric method for detection of mercury ions is described which is made bymodifying a gold electrode with 3-mercaptopropionic acid followed by covalent attachment of theoctapeptide His-Phe-His-Ala-His-Phe-Ala-Phe to the self-assembled monolayer using carbodiimidecoupling. A linear working range for concentration of mercury between 0.25 to 0.81 with LOD-99.510 M was obtained which is below the WHO guidelines for drinking water. The reproducibilityof the analytical signal is 4.5% in indicating a reproducible and reliable detection system. Thedeveloped method was applied for the detection of Hg(II) in spiked wastewater and validated againstICPMS. Good agreement was obtained between the developed method and ICPMS. Insignificant3+ 3+ 2+ 2+ 2+ 2+ interference was observed by As , Cr , Cu , Ni , Pb and Zn in detection of Hg(II) thus makingthe developed system highly potential for electrochemical sensor in Hg(II) detection.
机译：描述了一种灵敏的伏安法，用于检测汞离子，该方法通过用3-巯基丙酸修饰金电极，然后将八肽His-Phe-His-Ala-His-Phe-Ala-Phe共价连接到自组装单层上而制得使用碳二亚胺偶联。使用LOD-99.510 M获得的汞浓度线性工作范围为0.25至0.81，低于WHO饮用水准则。分析信号的重现性为4.5％，表明检测系统可重现且可靠。该方法适用于加标废水中Hg（II）的检测，并通过ICPMS进行了验证。所开发的方法与ICPMS之间获得了良好的一致性。 As，Cr，Cu，Ni，Pb和Zn在Hg（II）的检测中观察不到3+ 3+ 2+ 2+ 2+ 2+ 2+的干扰，因此开发的系统对于Hg（II）的电化学传感器具有很高的潜力。

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