Title of article
Superoxide sensor based on hemin modified electrode
Author/Authors
Chen، نويسنده , , Jian and Wollenberger، نويسنده , , Ulla and Lisdat، نويسنده , , Fred and Ge، نويسنده , , Bixia and Scheller، نويسنده , , Frieder W.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2000
Pages
6
From page
115
To page
120
Abstract
A hemin modified pyrolytic graphite (PG) electrode was prepared and applied for the electrochemical determination of superoxide. The rate constant of heterogeneous electron transfer of adsorbed hemin was determined with cyclic voltammetry (CV) to be 15 s−1. The hemin modified electrode was applied to detect superoxide radicals produced by xanthine oxidase (XOD) catalyzed hypoxanthine oxidation. Sensitivity was higher than compared to the established cytochrome c (cyt c)-based sensor. The antioxidative activity of superoxide dismutase (SOD) and uric acid was also investigated.
Keywords
Superoxide sensor , Hemin , antioxidant , Hemin modified electrode , Superoxide , SOD
Journal title
Sensors and Actuators B: Chemical
Serial Year
2000
Journal title
Sensors and Actuators B: Chemical
Record number
1413751
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