Determination of Cocaine by Square Wave Voltammetry with Carbon Paste Electrodes
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چکیده
منابع مشابه
Determination of Riboflavin by Nanocomposite Modified Carbon Paste Electrode in Biological Fluids Using Fast Fourier Transform Square Wave Voltammetry
Herein, fast Fourier transformation square-wave voltammetry (FFT-SWV) as a novel electrochemical determination technique was used to investigate the electrochemical behavior and determination of Riboflavin at the surface of a nanocomposite modified carbon paste electrode. The carbon paste electrode was modified by nanocomposite containing Samarium oxide (Sm2O3)/reduced gra...
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Multiwalled carbon nanotubes were used to modify the surface of a glassy carbon electrode to enhance its electroactivity. Nafion served to immobilise the carbon nanotubes on the electrode surface. The modified electrode was used to develop an analytical method for the analysis of ascorbic acid (AA) by square-wave voltammetry (SWV). The oxidation of ascorbic acid at the modified glassy carbon el...
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Um eletrodo de pasta de carbono modificado com o polímero poli(vinilpirrolidona) foi avaliado para o estudo eletroquímico e a determinação eletroanalítica da quercetina. Sobre este eletrodo, voltamogramas cíclicos da quercetina apresentaram três picos de oxidação localizados em +0,32, +0,78 e +1,04 V. A eletro-oxidação no primeiro pico conduz à formação da orto-quinona correspondente, a qual po...
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The foregone studies have shown that nicotinic acid cannot produce noticeable reductive signal at carbon-based electrodes without appropriate modification of the electrode. This is an obvious reason that mercury is known as the main electrode material for electro-reduction of nicotinic acid. In this study, it has been shown that it is possible to create a remarkable reduction signal for NA at a...
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O comportamento voltamétrico do 4-nitrofenol foi estudado em meio aquoso sobre o eletrodo de diamante dopado com boro usando a voltametria de onda quadrada. Após a otimização dos parâmetros experimentais, o estudo foi realizado em tampão Britton-Robinson com pH 6,0. Nestas condições foi observado somente um pico de oxidação em torno de 1,0 V vs. Ag/AgCl com transferência de dois elétrons e um p...
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ژورنال
عنوان ژورنال: Brazilian Journal of Forensic Sciences, Medical Law and Bioethics
سال: 2019
ISSN: 2237-261X
DOI: 10.17063/bjfs8(3)y2019149