A glucose oxidase sensor based on screen-printed carbon electrodes modified by polypyrrole.

A glucose oxidase sensor based on screen-printed carbon electrodes modified by polypyrrole. Research Abstract Details 

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A glucose oxidase sensor based on screen-printed carbon electrodes modified by polypyrrole. Abstract Text:

Hui Xu,Guang Li,Jieying Wu,You Wang,Jun Liu,

A disposable amperometric biosensor for detecting blood glucose has been developed. The sensor is based on a screen-printed electrode prepared by electrochemical polymerization of pyrrole with glucose oxidase (GOD) and LiClO₄ dopants. In citric acid buffer (pH5.0), GOD with negative charges is immobilized within electropositive polypyrrole matrices onto a carbon electrode surface. Afterward, the electron transfer mediator, potassium ferricyanide is immobilized by adsorption. Experimentally the compositions of pyrrole, LiClO₄ and potassium ferricyanide are optimized. Amperometry is used for the determination of glucose concentration. Four microliters of glucose solution is needed for one test, and the response time of the sensor is 70s. The amperometric response of the enzyme electrode is linear in the range of 1-30 mM.

A glucose oxidase sensor based on screen-printed carbon electrodes modified by polypyrrole. Publishing Authors By Initials

H Xu,G Li,J Wu,Y Wang,J Liu,

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A glucose oxidase sensor based on screen-printed carbon electrodes modified by polypyrrole. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Conference proceedings : ... Annual International

VOLUME: 2

Page Numbers: 1917-20

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ISSN: 1557-170X

DAY: 6

MONTH: 02

YEAR: 2005

A glucose oxidase sensor based on screen-printed carbon electrodes modified by polypyrrole. Information

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LANGUAGE: eng

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AFFILIATION: Dept. of Biomed. Eng., Zhejiang Univ., Hangzhou.

Country: United States

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MEDLINETA: Conf Proc IEEE Eng Med Biol So

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