Electrochemical detection of parathion at a glassy-carbon electrode modified with hexadecane

被引：1
|
作者：
Cuiling Xu
Kangbing Wu
Shengshui Hu
Dafu Cui
机构：
[1] Department of Chemistry,
[2] Wuhan University,undefined
[3] Wuhan 430072,undefined
[4] P.R. China,undefined
[5] State Key Laboratory of Transducer Technology,undefined
[6] Chinese Academy of Science,undefined
[7] Beijing 100080,undefined
[8] P.R. China,undefined
来源：
Analytical and Bioanalytical Chemistry | 2002年 / 373卷
关键词：
Parathion Hexadecane Electrochemical Determination Chemically modified electrode;
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摘要：
A modified electrode, based on a hexadecane (C16)-coated glassy-carbon electrode (GCE) has been developed for the determination of parathion. The electrochemical behavior of parathion was investigated by cyclic voltammetry (CV). The peak potential and peak current were found to depend on the supporting electrolyte and the pH of the buffer solution. The reduction currents for parathion were proportional to parathion concentration over the range 8×10–8–2×10–5 mol L–1. The detection limit was 2×10–8 mol L–1 parathion for an accumulation time of 30 s. The effects of organic and inorganic species on the determination of parathion were also studied. A procedure was developed to extract parathion from spiked soil samples using a mixture of dichloromethane and acetone as the extraction solvent. The complete extraction and analytical procedure are simple, inexpensive and rapid. Parathion was determined in a soil sample by use of linear scan voltammetry (LSV).
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页码：284 / 288
页数：4
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