Li G, Liao JM, Hu GQ, Ma NZ, Wu PJ. Study of carbon nanotube modified biosensor for monitoring total cholesterol in blood.
Biosens Bioelectron 2005;
20:2140-4. [PMID:
15741088 DOI:
10.1016/j.bios.2004.09.005]
[Citation(s) in RCA: 170] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2004] [Revised: 09/02/2004] [Accepted: 09/03/2004] [Indexed: 11/20/2022]
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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