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Citation: LUO Qimei, LI Zhen, WANG Huixian, LIU Dengyou. A Methyl Parathion Electrochemical Sensor Based on Poly(glutamic acid) Modified Glass Carbon Electrodes[J]. Chinese Journal of Applied Chemistry, ;2013, 30(9): 1082-1088. doi: 10.3724/SP.J.1095.2013.20549 shu

A Methyl Parathion Electrochemical Sensor Based on Poly(glutamic acid) Modified Glass Carbon Electrodes

Science College of Hunan Agricultural University, Changsha 410128, China

Received Date: 27 November 2012
Revised Date: 21 February 2013

A simple electrochemical sensor was developed for detecting methyl parathion(MP) based on electropolymerization of L-glutamic acid on the glassy carbon electrode. The redox behavior of MP on the sensor was investigated by cyclic voltammetry, and the determination of methyl parathion was performed with differential pulse voltammertry. A highly linear current response to methyl parathion was obtained in the concentration range from 5.0 × 10^-7 to 7.5 × 10^-4mol/L. A detection limit of 1.0 × 10^-9mol/L at a signal-to-noise ratio of 3 was attained. The method could be applied to the determination of methyl parathion in real samples.
- methyl parathion,
- poly (glutamic acid),
- electrochemical sensor,
- electropolymerization
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