Electrochemical behavior study of some selected phenylurea herbicides at activated pencil graphite electrode. Electrooxidation of linuron and monolinuron

被引：17

作者：

Buleandra, Mihaela ^{[1
]}

Popa, Dana Elena ^{[1
]}

David, Iulia Gabriela ^{[1
]}

Bacalum, Elena ^{[1
]}

David, Victor ^{[1
]}

Ciucu, Anton Alexandru ^{[1
]}

机构：

[1] Univ Bucharest, Dept Analyt Chem, Fac Chem, 90-92 Panduri Av, Bucharest 050663, Romania

来源：

MICROCHEMICAL JOURNAL | 2019年 / 147卷

关键词：

Sensor; Electrochemically treated; Electrooxidation; Voltammetry; Herbicides; Simultaneous determination; PERFORMANCE LIQUID-CHROMATOGRAPHY; VOLTAMMETRIC DETERMINATION; GAS-CHROMATOGRAPHY; CARBON; SAMPLES; WATER; SOIL; ADSORPTION; EXTRACTION; PESTICIDES;

D O I：

10.1016/j.microc.2019.04.042

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel and rapid voltammetric assay for the simultaneous determination of monolinuron (MLN) and linuron (LIN) using an electrochemically pretreated pencil graphite electrode (PGE*) is reported for the first time. Enhanced oxidation peak currents of MLN and LIN were observed at PGE* when compared with electrochemically non-pretreated PGE. Differential pulse voltammetric (DPV) results showed distinct anodic peaks at 1.064 V and 1.170 V for MLN and LIN, respectively. Under optimum conditions, the detection limits were 3.7 x 10(-7) mol L-1 and 5.8 x 10(-7) mol L-1 for MLN and LIN respectively. The DPV method was applied for the quantitative determination of the mentioned compounds in spiked tap water samples enriched by solid phase extraction. The voltammetric results were in good agreement with high-performance liquid chromatography data.

引用

页码：1109 / 1116

页数：8

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