多壁碳纳米管修饰酶电极测定马拉硫磷

电化学（中英文） ›› 2007, Vol. 13 ›› Issue (4): 431-435.

多壁碳纳米管修饰酶电极测定马拉硫磷

张璐;张耀东;漆红兰;

陕西省生命分析化学重点实验室陕西师范大学化学与材料科学学院,陕西省生命分析化学重点实验室陕西师范大学化学与材料科学学院,陕西省生命分析化学重点实验室陕西师范大学化学与材料科学学院陕西西安710062,陕西西安710062,陕西西安710062

收稿日期:2007-11-28 修回日期:2007-11-28 出版日期:2007-11-28 发布日期:2007-11-28

Determination of Malathion Based on Carbon Nanotubes Modified Electrode Incorporating Acetylcholinesterase

ZHANG Lu,ZHANG Yao-dong,QI Hong-lan

(Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province,`Shaanxi Normal University,Xi'an,710062

Received:2007-11-28 Revised:2007-11-28 Published:2007-11-28 Online:2007-11-28

摘要/Abstract

摘要： 应用化学交联法将巴西日圆线虫乙酰胆碱酯酶(AChE)固定于多壁碳纳米管修饰的玻碳电极表面,制备用于有机磷农药检测的电化学生物传感器.研究了巯基胆碱(TCh)在该修饰电极上的电化学行为.优化实验条件得出,响应电流与马拉硫磷的浓度在6.0×10-10~6.0×10-9mol.L-1范围内呈良好的线性关系,检出限为1.0×10-10mol.L-1.测定了湖水中马拉硫磷的含量,回收率为97%~105%.

关键词: 生物传感器, 碳纳米管, 马拉硫磷, 有机磷, 乙酰胆碱酯酶

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.

Key words: biosensors, carbon nanotube, malathion, organophosphorus pesticide, acetylcholinesterase

中图分类号:

TQ450.7

张璐, 张耀东, 漆红兰, . 多壁碳纳米管修饰酶电极测定马拉硫磷[J]. 电化学（中英文）, 2007, 13(4): 431-435.

ZHANG Lu, ZHANG Yao-dong, QI Hong-lan. Determination of Malathion Based on Carbon Nanotubes Modified Electrode Incorporating Acetylcholinesterase[J]. Journal of Electrochemistry, 2007, 13(4): 431-435.

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链接本文: https://electrochem.xmu.edu.cn/CN/

https://electrochem.xmu.edu.cn/CN/Y2007/V13/I4/431

参考文献

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