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Amperometric glucose sensor using tetrathiafulvalene in Nafion gel as electron shuttle

✍ Scribed by Liu Haiying; Deng Jiaqi

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
550 KB
Volume
300
Category
Article
ISSN
0003-2670

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✦ Synopsis

Ao amperometric mediated sensor for glucose has been contrived by using bovine serum albumin and glutaraldehyde to immobilize glucose oxidase on a Nafion-tetrathiafulvalene (TTF) modified electrode. It is further coated by Nafion. The inner Nafion membrane can prevent leaking of tetrathiafulvalene; the outer Nafion film serves as a barrier to electroactive anionic interferents such as ascorbate and urate and protects the biosensor from fouling agents. The experiment shows that lTF+ and 'lTF'+ can oxidize the reduced flavin adenine dinucleotide (FADH,) of glucose oxidase. The biosensor responds to glucose in less than 50 s and its calibration curve is linear from 3.0 X 10m4 to 1.0X lo-* M.

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