Highly sensitive electrochemical sensor based on pyrrolidinium ionic liquid modified ordered mesoporous carbon paste electrode for determination of carbendazim

文献类型： 外文期刊

第一作者： Wang, Tianshun

作者： Wang, Tianshun;Xie, Liping;Zhu, Junjie;Tang, Li;Ning, Dejiao;Yan, Feiyan;Ya, Yu;Wang, Tianshun;Xie, Liping;Zhu, Junjie;Tang, Li;Ning, Dejiao;Yan, Feiyan

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期刊名称：ANALYTICAL METHODS （ 影响因子：2.896； 五年影响因子：2.716 ）

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收录情况： SCI

摘要： A simple, highly sensitive electrochemical sensor based on a pyrrolidinium ionic liquid (PIL) modified ordered mesoporous carbon (OMC) paste electrode (PIL/OMCPE) was developed for the determination of carbendazim by differential pulse voltammetry. The structure of the synthesized OMC was characterized by transmission electron microscopy. The electrochemical characteristics of the modified electrodes were investigated using [Fe(CN)(6)](3-/4)-as the electrochemical probe. Compared with other electrodes, the PIL/OMCPE exhibited a larger electrode surface and a faster electron-transfer rate. The electrochemical behavior of carbendazim at the modified electrode was investigated by cyclic voltammetry. The PIL/OMCPE exhibited good performance for the electrochemical oxidation of carbendazim. The peak current of carbendazim at the PIL/OMCPE significantly increased in comparison with those at the bare carbon paste electrode (CPE), OMCPE, and PIL modified CPE. Under optimal conditions, the relationship between the carbendazim concentration and peak current was studied, and the developed PIL/OMCPE sensor exhibited good linearity in a wide range from 1.25 to 800 mu g L-1. The limit of detection was estimated to be 0.500 mu g L-1 (signal-to-noise ratio = 3). The proposed sensor was successfully applied for the determination of carbendazim in sugarcane samples with satisfactory results.

分类号： O65

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