An electrochemical fungicide pyrimethanil sensor based on carbon nanotubes/ionic-liquid construction modified electrode

被引：39

作者：

Yang, Jichun ^{[1
]}

Wang, Qiong ^{[1
]}

Zhang, Minhui ^{[1
]}

Zhang, Shuming ^{[1
]}

Zhang, Lei ^{[1
]}

机构：

[1] Liaoning Univ, Coll Chem, Shenyang 110036, Peoples R China

来源：

FOOD CHEMISTRY | 2015年 / 187卷

关键词：

Pyrimethanil; Multi-walled carbon nanotubes; Ionic liquids; Modified electrode; Electrochemical determination; SOLID-PHASE EXTRACTION; IONIC LIQUID; MASS-SPECTROMETRY; ASCORBIC-ACID; CHROMATOGRAPHY; WATER; MICROEXTRACTION; PESTICIDES;

D O I：

10.1016/j.foodchem.2015.04.009

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this study, a simple, rapid, sensitive and environmentally friendly electroanalytical detection method for pyrimethanil (PMT) was developed, which was based on multi-walled carbon nanotubes (MWCNTs) and ionic liquids (IL) 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]) modified glassy carbon electrode (GCE). MWCNTs-IL modified electrode significantly enhanced the oxidation peak current of PMT by combining the excellent electrochemical properties of MWCNTs and IL, suggesting that the modified electrode can remarkably improve the sensitivity of PMT detection. Under the optimum conditions, this electrochemical sensor exhibited a linear concentration range for PMT of 1.0 x 10(-7)-1.0 x 10(-4) mol L-1 and the detection limit was 1.6 x 10(-8) mol L-1 (S/N = 3). The fabricated electrode showed good reproducibility, stability and anti-interference, and also it was successfully employed to detect PMT in real samples. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：1 / 6

页数：6

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