聚吡咯修饰生物传感器的制备及应用  

Preparation and Application of Ppy Modified B io-sensor

作　　者：程发良 周小勇[2] 莫金垣[3] 戴晓云[4] 

机构地区：[1]东芜理工学院应用化学系,523006 [2]中山学院应用化学系,528403 [3]中山大学化学系,510275 [4]香港科技大学生化系

出　　处：《食品科学》2000年第3期46-48,共3页Food Science

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＾－１－５．０＊１０＾－８ｍｏｌ／Ｌ，为５７．５ｍＶ／ＰＶｃ，检测下限为１．０＊１０＾－８ｍｏｌ／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。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.

关 键 词：聚吡咯 抗坏血酸 生物传感器 循环伏安法 饮料 

分 类 号：Q－331[生物学] TS275[轻工技术与工程—农产品加工及贮藏工程]