Study of carbon nanotube modified biosensor for monitoring total cholesterol in blood |
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| Authors: | Li G Liao J M Hu G Q Ma N Z Wu P J |
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| Institution: | Department of Biomedical Engineering, Zhejiang University, 38 ZheDa Road, Hangzhou 310027, PR China. guangli@cbeis.zju.edu.cn |
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| Abstract: | A carbon nanotube modified biosensor for monitoring total cholesterol in blood was studied. This sensor consists of a carbon working electrode and a reference electrode screen-printed on a polycarbonate substrate. Cholesterol esterase, cholesterol oxidase, peroxidase and potassium ferrocyanide were immobilized on the screen-printed carbon electrodes. Multi-walled carbon nanotubes (MWCN) were added to prompt electron transfer. Experimental results show that the carbon nanotube modified biosensor offers a reliable calibration profile and stable electrochemical properties. |
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