齐齐哈尔大学学报（自然科学版）
齊齊哈爾大學學報（自然科學版）
제제합이대학학보（자연과학판）
JOURNAL OF QIQIHAR UNIVERSITY(NATURAL SCIENCE EDITION)
2013年
3期
47-49,58
,共4页
孙洪力%杨铁金%杜江%富菲
孫洪力%楊鐵金%杜江%富菲
손홍력%양철금%두강%부비
化学修饰电极%VB 2%石墨烯%Nafion
化學脩飾電極%VB 2%石墨烯%Nafion
화학수식전겁%VB 2%석묵희%Nafion
chemical modified electrode%vitamin B2%graphene%Nafion
采用Hummers法制备石墨烯对玻碳电极进行修饰，表面修饰效果采用电子显微镜进行表征，对测定条件进行优化。用循环伏安法（CV）和差分脉冲伏安法（DPV）对核黄素（RF）的电化学行为进行了研究。实验结果表明，与裸玻碳电极相比，石墨烯/Nafion膜修饰电极显示出很好的催化作用，核黄素在修饰电极上得到的氧化还原峰电流显著增强。还原峰电流与核黄素的浓度在3.0×10-6～2.0×10-5mol·L-1范围内成线性，线性关系数R=0.9946,检测限为1.0×10-6mol·L-1。用此方法测定了维生素B2片中维生素B2的含量，效果较好。
採用Hummers法製備石墨烯對玻碳電極進行脩飾，錶麵脩飾效果採用電子顯微鏡進行錶徵，對測定條件進行優化。用循環伏安法（CV）和差分脈遲伏安法（DPV）對覈黃素（RF）的電化學行為進行瞭研究。實驗結果錶明，與裸玻碳電極相比，石墨烯/Nafion膜脩飾電極顯示齣很好的催化作用，覈黃素在脩飾電極上得到的氧化還原峰電流顯著增彊。還原峰電流與覈黃素的濃度在3.0×10-6～2.0×10-5mol·L-1範圍內成線性，線性關繫數R=0.9946,檢測限為1.0×10-6mol·L-1。用此方法測定瞭維生素B2片中維生素B2的含量，效果較好。
채용Hummers법제비석묵희대파탄전겁진행수식，표면수식효과채용전자현미경진행표정，대측정조건진행우화。용순배복안법（CV）화차분맥충복안법（DPV）대핵황소（RF）적전화학행위진행료연구。실험결과표명，여라파탄전겁상비，석묵희/Nafion막수식전겁현시출흔호적최화작용，핵황소재수식전겁상득도적양화환원봉전류현저증강。환원봉전류여핵황소적농도재3.0×10-6～2.0×10-5mol·L-1범위내성선성，선성관계수R=0.9946,검측한위1.0×10-6mol·L-1。용차방법측정료유생소B2편중유생소B2적함량，효과교호。
The graphene prepared by Hummers was modified on glassy carbon electrode, and the surface of it was characterized by electron microscopy.The operational parameters were optimized. The electrochemical behavior of riboflavin(RF)was studied by cyclic voltammetry(CV)and differential pulse voltammetry(DPV). Through test, it was concluded that graphene /Nafion modified electrode showed good catalytic activity compared with the bare glassy carbon electrode, the current of redox peak for riboflavin on modified electrode greatly was enhanced. Peak current is linear with concentration of riboflavin over the range 3.0×10-6~2.0×10-5 mol·L-1,R=0.9946,The limit of detection was as low as 1.0×10-6 mol·L-1. This method for determine vitamin B2 in Vitamin B2 tablets has good effect.
