Cholesterol oxidase biosensor based on a glassy carbon electrode modified with Nafion and methyl viologen

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JIN
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Biosensor; cholesterol oxidase; enzyme electrode;
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O657.1 [电化学分析法];
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摘要
Cholesterol oxidase biosensor has been constructed by using bovine serum albumin and glutaraldehyde as cross linker to immobilize cholesterol oxidase and cholesterol esterase on a glassy carbon electrode modified with Nafion and methyl viologen. The biosensor has been used to determine total cholesterol in blood. The linear range of the determination is 2.5×10to 1.0×10-4 mol/L. The detection limit is about 5.0×10mol/L. The response time is 12 s. This biosensor has the advantage of high selectivity, sensitivity and short response time.
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页码:343 / 347
页数:5
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