FOOD SCIENCE ›› 2000, Vol. 21 ›› Issue (3): 46-48.

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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

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