蛋氨酸在MnHCF修饰电极上的电化学行为及测定  

Electrol-chemical behaviors and determination of methionine on the manganese hexacyanoferrate-modified glassy carbon electrode

作　　者：蔡卓[1] 莫丽君[1] 宿燕婷[1] 卢登峰[1] 张娴[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2010年第2期238-240,共3页Journal of Guangxi University（Natural Science Edition）

基　　金：广西自然科学基金资助项目(0447008)

摘　　要：制备了铁氰化锰修饰玻碳电极，采用循环伏安法研究了蛋氨酸在修饰电极上的电化学特性，并建立了一种电化学检测蛋氨酸的新方法。在最佳实验条件下，线性伏安扫描的峰电流与蛋氨酸浓度在2．0×10^-5-2．0×10^-2mol／L范围内有良好的线性关系，线性方程为Ip（μA）=0．0589C（μmol／L）＋2．7（r=0．9996，n=5），检出限为5．0×10^-6mol／L（S／N=3）。将该修饰电极用于蛋氨酸样品的测定，结果满意。A new method for the determination of Methionine based on the manganese hexacyanofe- wate modified glassy carbon electrode was described. The electrochemical characteristics of Methio- nine at this modified electrode were studied by cyclic voltammetry in detail. Under the optimal conditions the method showed good linearly for 2. 0 ×10^-5-2.0×10^-2mol/L of Methionine with a detection limit of 5.0 × 10^-2mol/L（ S/N = 3 ）by linear sweep vohammetry. The method was verified by the determination of Methionine with satisfactory results.

关 键 词：蛋氨酸 铁氰化锰 玻碳电极 

分 类 号：O657.1[理学—分析化学]