食品科学 ›› 2000, Vol. 21 ›› Issue (3): 46-48.

• 分析检测 • 上一篇    下一篇

聚吡咯修饰生物传感器的制备及应用

程发良,周小勇,莫金垣,戴晓云   

  1. 东芜理工学院应用化学系; 中山学院应用化学系; 中山大学化学系; 香港科技大学生化系
  • 出版日期:2000-03-15 发布日期:2011-11-29

Preparation and Application of Ppy Modified B io-sensor

 CHENG  Fa-Liang, ZHOU  Xiao-Yong, MO  Jin-Yuan, DAI  Xiao-Yun   

  • Online:2000-03-15 Published:2011-11-29

摘要: 用电化学方法制备了聚吡咯-抗坏血酸传感器,研究了传感器制备的条件,表征了传感器的电化学行为特征及其对抗坏血酸的Nernst响应特性。传感器对抗坏血酸Nernst响应线性范围为5.0×10~-4~50×10~-8mol/L斜率为57.5mV/PVc,检测下限为 1.0×10~-8 mol/L。电极的稳定性好、响应快、寿命较长。可用于饮料中抗坏血酸含量的测定

关键词: 聚吡咯, 抗坏血酸, 生物传感器, 循环伏安法

Abstract: Electroactive polypyrrole modified ascorbic acid bio-sensor was prepared by cyclic voltammogram.The polymerization and potential response mechanism were investigated in detail.In the concentration rang of 3.0×1-0-4 ~ 5.0 ×10-8mol/Lthe bio-sensor had a linear response for ascorbic acid with a slope of 57.3mV/PVc.The bio-sensor had advantages such as fast response good steadiness etc.to test the level of ascorbic acid in beverage.

Key words: Polypyrrole, Ascorbic acid, Bio-sensor, Cyclic Voltammogram