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谷胱甘肽电化学检测方法的研究 被引量:2

Study on Electrochemical Determination Method for Reductive Glutathione
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摘要 基于还原型谷胱甘肽(GSH)与金属离子相互作用,从而影响其在金电极上的电化学响应,建立了一种灵敏、简便的GSH电化学检测方法。以铜(Ⅱ)或铬(Ⅵ)为信号离子,采用循环伏安法研究不同浓度的GSH对铜(Ⅱ)或铬(Ⅵ)在金电极上的电化学响应的影响规律。结果表明,铜(Ⅱ)和铬(Ⅵ)分别在0.28 V和0.25 V出现了较强的还原峰;当反应体系中加入不同浓度的GSH时,峰电流均下降,且铜(Ⅱ)和铬(Ⅵ)峰电流分别在1.0×10-8~8.0×10-8mol.L-1和1.0×10-11~7.0×10-11mol.L-1GSH浓度范围内与GSH浓度呈线性相关;铜(Ⅱ)和铬(Ⅵ)的GSH检测限分别为1.0×10-9mol.L-1和1.0×10-11mol.L-1。 An easy electrochemical determination method for glutathione(GSH) based on the reduction effect of GSH on the redox current of copper(Ⅱ) or chromium(Ⅵ) were described in this paper.A strong redox peak appeared at about 0.28 V and 0.25 V on a bare Au electrode for copper(Ⅱ) and chromium(Ⅵ),respectively.When GSH was added in the solution,the current value was depressed and the decrease was dependent on the concentration of GSH added.The results showed that the reduction peak current of copper(Ⅱ) and chromium(Ⅵ) had good linearity with concentration of GSH in the range of 1.0×10-8 ~ 8.0×10-8 mol·L-1 and 1.0×10-11 ~ 7.0×10-11 mol·L-1,and the detection limit was 1.0×10-9mol·L-1 and 1.0×10-11mol·L-1,respectively.
出处 《化学与生物工程》 CAS 2010年第10期41-43,46,共4页 Chemistry & Bioengineering
基金 湖北工业大学博士启动基金资助项目(32700224)
关键词 谷胱甘肽 铜(Ⅱ) 铬(Ⅵ) 电化学检测 循环伏安法 glutathione copper(Ⅱ) chromium(Ⅵ) electrochemical determination cyclic voltammetry
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