引用本文:
罗启枚, 李振, 王辉宪, 刘登友. 基于聚谷氨酸修饰玻碳电极的甲基对硫磷电化学传感器[J]. 应用化学,
2013, 30(9): 1082-1088.
doi:
10.3724/SP.J.1095.2013.20549
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
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
基于聚谷氨酸修饰玻碳电极的甲基对硫磷电化学传感器
English
A Methyl Parathion Electrochemical Sensor Based on Poly(glutamic acid) Modified Glass Carbon Electrodes
Abstract:
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.
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Key words:
- methyl parathion
- / poly (glutamic acid)
- / electrochemical sensor
- / electropolymerization
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