Determination of Malathion Based on Carbon Nanotubes Modified Electrode Incorporating Acetylcholinesterase

Authors

Lu ZHANG, Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province,`Shaanxi Normal University,Xi'an,710062;
Yao-dong ZHANG, Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province,`Shaanxi Normal University,Xi'an,710062;
Hong-lan QI, Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province,`Shaanxi Normal University,Xi'an,710062;

Abstract

A biosensor for determination of organophosphorus pesticide based on the acetylcholinesterase and multi-wall carbon nanotubes modified electrode is fabricated.Under the optimal conditions,the chronoamperometric current at +0.70V(vs.SCE) increased linearly with the concentration of malathion in the range from 6.0×10-10 to 6.0×10-9 mol·L-1 with a detection limit of 1.0×10-10 mol·L-1.The recoveries of malathion in lake water is 97% to 105% determinated by this method.

Keywords

biosensors, carbon nanotube, malathion, organophosphorus pesticide, acetylcholinesterase

DOI Link

https://doi.org/10.61558/2993-074X.1848

Publication Date

2007-11-28

Online Available Date

2007-11-28

Revised Date

2007-11-28

Received Date

2007-11-28

Recommended Citation

Lu ZHANG, Yao-dong ZHANG, Hong-lan QI. Determination of Malathion Based on Carbon Nanotubes Modified Electrode Incorporating Acetylcholinesterase[J]. Journal of Electrochemistry, 2007 , 13(4): 431-435.
DOI: 10.61558/2993-074X.1848
Available at: https://jelectrochem.xmu.edu.cn/journal/vol13/iss4/15