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.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2000年第3期46-48,共3页
Food Science
