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[1]程若娟,万其进*,王秀文,等.多巴胺在聚牛磺酸膜上的伏安行为及选择测定[J].武汉工程大学学报,2008,(04):20-24.
　CHENG Ruo juan,WAN Qi jin,WANG Xiu wen,et al.Electrochemical behavior of dopamine on polytaurine modified electrodes and its selective determination[J].Journal of Wuhan Institute of Technology,2008,(04):20-24.
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2008年04期
页码:
20-24
栏目:
化学与化学工程
出版日期:
2008-04-30

文章信息/Info

Title:
Electrochemical behavior of dopamine on polytaurine
modified electrodes and its selective determination
文章编号:
16742869(2008)04002005
作者:
程若娟; 万其进*; 王秀文; 余芬; 龙雨; 艾军
武汉工程大学化工与制药学院，绿色化工过程省部共建教育部重点实验室，
湖北省新型反应器与绿色化学工艺重点实验室，湖北 武汉 430074
Author(s):
CHENG Ruojuan;  WAN Qijin;  WANG Xiuwen;  YU Fen;  LONG Yu;  AI Jun
School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology;
Key Laboratory for Green Chemical Process of Ministry of Education; Hubei Key Lab of
Novel Reactor and Green Chemical Technology, Wuhan 430074, China
关键词:
牛磺酸; 多巴胺; 抗坏血酸; 电催化作用; 选择测定
Keywords:
taurine; dopamine; ascorbic acid; electrocatalysis; selective determination
分类号:
O657.1
DOI:
-
文献标志码:
A
摘要:
在含牛磺酸的磷酸盐缓冲溶液中，用循环伏安法在玻碳电极上制备聚牛磺酸薄膜.采用循环伏安法研究多巴胺（DA）和抗坏血酸（AA）在聚牛磺酸膜修饰电极上的电化学行为.实验结果表明聚牛磺酸膜修饰电极对DA的氧化具有良好的电催化作用和选择性，DA与AA氧化峰电位差达220 mV，对DA的电流响应灵敏度高出AA近十倍.在5×10-6～ 1×10-4 mol/L范围内，DA的浓度与峰电流呈良好的线性关系，相关系数为0.998 3，检测限为1.0×10-6 mol/L.该修饰电极能在AA共存时选择测定DA.
Abstract:
A stable conducting film of polytaurine was prepared by electrochemical polymerization on the surface of glassy carbon electrode.It is used to electrochemically detect dopamine (DA)and ascorbic acid (AA).The results indicated that modified electrode have good electrocatalysis and selective determination on DA.The current response on DA is more than ten times to AA.It not only can improve the electrochemical behaviors of DA and AA， but also can resolve the mixed voltammetric response of DA and AA at GCE into two welldefined voltammetric peaks.The seperation between the two peak potentials was 220 mV， which were large enough for the determination of DA in the presence of AA.Under selected conditions， the linearity of DA was in the range of 5.0×10-6～1.0×10-4 mol/L with a correlation coefficient of 0.998 3.The detection limit is 1.0×10-6 mol/L.This modified electrode can avoid the interference by AA for determination of DA and be used for quantitative determination of DA in real samples.

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备注/Memo

备注/Memo:
收稿日期：20071129
基金项目：湖北省教育厅重点项目(D200515003)及湖北省化学基础课实验教学示范中心研究创新基金资助
作者简介：程若娟（1984），女，湖北黄冈人，大学本科生.
研究方向：电分析化学.
指导老师：万其进，教授，硕士生导师. 研究方向：生命分析化学、电化学与生物传感器.*通讯联系人
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