Journal
ELECTROANALYSIS
Volume 16, Issue 1-2, Pages 145-149Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.200302933
Keywords
disposable carbon nanotube modified screen-printed biosensor; amperometric detection; organophosphorous pesticides; nerve agents; acetylcholinesterase/choline oxidase
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A disposable carbon nanotube-based biosensor was successfully developed and applied to the detection of organophosphorus (OP) pesticides and nerve agents. The biosensors using acetycholinesterase (AChE)/choline oxidase (CHO) enzymes provided a high sensitivity, large linear range, and low detection limits for the analysis of OP compounds. Such characteristics may be attributed to the catalytic activity of carbon nanotube to promote the redox reaction of hydrogen peroxide produced during AChE/CHO enzymatic reactions with their substrate, as well as the large surface area of carbon nanotube materials.
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