期刊
COLLOIDS AND SURFACES B-BIOINTERFACES
卷 82, 期 1, 页码 40-45出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfb.2010.08.011
关键词
Gold; Nano; Sodium dodecylbenzene sulfonate; Methyl parathion; Voltammetry
资金
- Natural Science Foundation of Hubei Province [2007ABA127]
- Qinzhou City [20095401]
- State Ethnic Affairs Commission [07ZN06]
- South-Central University for Nationalities [XTZ09005]
- Special Fund for Basic Scientific Research of Central Colleges. South-Central University for Nationalities [ZZZ10002]
A gold/sodium dodecylbenzene sulfonate nanoparticles modified glassy carbon electrode (nano-Au/SDBS/GCE) was electrochemically fabricated with a constant potential at -0 4V The obtained nano-Au/SDBS/GCE was characterized wit h scanning electronic microscopy, X-ray photoelectron spectroscopy and electrochemical techniques. Electrochemical behaviors of methyl parathion at the nano-Au/SDBS/GCE were thoroughly investigated Compared to the unmodified electrode, the peak current obviously increased and the oxidation peak potential negatively shifted These changes indicated that the composite nanoparticles possess good electrocatalytic performance on the electrochemical reaction of methyl parathion Experimental parameters such as deposition time, pH value and accumulation conditions were optimized. Under optimum conditions, the peak current corresponding to the oxidation of the hydroxylamine group was found in a good linear relationship with the methyl parathion concentration In addition, a calibration curve with excellent linearity was obtained in the concentration range from 5 Ox 10(-7) mol L(-1) to 1 0 x 10(-4) mol L(-1) with an estimated detection limit of 8 6 x 10(-8) mol L(-1) (S/N = 3). The successful determination of methyl parathion in real samples demonstrated the usefulness and potential applications of this method. Crown Copyright (C) 2010 Published by Elsevier B.V All rights reserved
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据