Nouveau Modele d'Electrode Modifiee a Base de Carbone et de Polymere

Prete, Michel; Kauffmann, J.M.; Vire, J. C.; Patriarche, Gaston; Debye, B.; Geuskens, Et G.

doi:10.1080/00032718408065315

Cited by 12 publications

(4 citation statements)

References 8 publications

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“…[17] Nevertheless, during the following years it was claimed that codeine was hardly oxidizable or even devoid of electroactivity, [24,25] which is curious in view of its structure similarity with morphine.…”

Section: Codeinementioning

confidence: 99%

“…[19] As a result of the apparent difficulty of oxidizing codeine at bare electrodes, in recent years several approaches have been proposed for its quantification using different modified electrodes and a biosensor. [22,25,30,31] All these methods present the advantage of sensitivity (Fig. 5) and selectivity and are demonstrated as a good possibility to be used in routine analysis of codeine Recently, an electroanalytical procedure based on the use of a bare GCE was proposed for the determination of codeine by square wave voltammetry and flow injection analysis.…”

Section: Codeinementioning

confidence: 99%

See 1 more Smart Citation

Electrochemical Analysis of Opiates—An Overview

Garrido¹,

Delerue–Matos²,

Borges

et al. 2004

Analytical Letters

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The analysis of opiates is of vital interest in drug abuse monitoring and research. This review presents a general overview of the electrochemical methods used for detection and quantification of opiates in a variety of matrices. Emphasis has been placed on the voltammetric methods used for study and determination of morphine, codeine, and heroin. Specific issues that need to be solved and better explained as well as future trends in the use of electrochemical methods in the examination of opiates are also discussed.

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Section: Codeinementioning

confidence: 99%

Section: Codeinementioning

confidence: 99%

Electrochemical Analysis of Opiates—An Overview

Garrido¹,

Delerue–Matos²,

Borges

et al. 2004

Analytical Letters

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“…1) from which resulted the formation of a quinonoid type structure [11]. Nevertheless, other studies involving the use of glassy carbon and of modified electrodes showed the appearance of more than one anodic wave that were not identified [12,13].…”

Section: Introductionmentioning

confidence: 89%

Voltammetric Oxidation of Drugs of Abuse II. Codeine and Metabolites

Garrido¹,

Delerue–Matos²,

Borges

et al. 2004

Electroanalysis

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The oxidation of codeine on glassy carbon electrodes has been studied in detail using differential pulse voltammetry. The results obtained using a glassy carbon electrode clearly show a much more complex oxidation mechanism than that previously reported when platinum and gold electrodes were used. To clarify the codeine oxidative profile, several metabolites and analogues of this alkaloid, codeine N-oxide, norcodeine, dihydrocodeine, acetylcodeine and 6-chlorodesoxycodeine, were synthesized and studied. It was deduced that the anodic waves observed in codeine oxidation are related to the presence of methoxy, hydroxy and tertiary amine groups. Due to the similarity of potentials at which these oxidative processes take place, at some pHs an overlap of peaks occurs and only one anodic wave is observed.

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“…The carbon polyethylene électrode, which has been earlier reported [6], has found few applications. The kinetics of the reactions are low, but background currents are very low and potential ranges very large, permitting the investigation of drugs not oxidizable at the other solid électrodes [24].…”

Section: Codéine and Menadiol Diacetate A Récent Reportmentioning

confidence: 99%

Voltammetry of pharmaceuticals using different types of modified electrodes

et al. 1985

Self Cite

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Voltammetrie von Pharmazeutica mit Hilfe verschiedener Typen von modifizierten Elektroden Zusammenfassung. Das elektrochemische Verhalten mehre rer chemisch interessanter Pharmazeutica an verschiedenen K ohlenstoffElektroden wurde mit Hilfe der cyclischen Voltammetrie untersucht. Die Eigenschaften der K ohlen stoffpasteElektrode und der GlaskohlenstoffElektrode wurden geprûft und verglichen mit denjenigen von selbst hergestellten modifizierten Elektroden auf der Basis von kolloidalem Graphit und in einem geeigneten Polymer dis pergiertem Ru6. Das Verhalten des Hexacyanoferrat(II/IIl) Paares wurden als typisch fûr einen Depolarisator angesehen. Es konnte gezeigt werden, daB das Ansprechen der Elektrode von der Art des Substrats deutlich beeinfluBt wird. Die Leistungsfâhigkeit jeder Elektrode wurde an Hand der voltammetrischen K urven der verschiedenen Pharmaca ausgewertet. Summary. Cyclic voltammetry was used to study the electrochemical behaviour of several chemically interesting drugs on différent types of carbon based électrodes. The behaviours of the carbon paste and glassy carbon électrodes were investigated and compared with the results obtained with homemade new types of modified électrodes based on colloïdal graphite or carbon black dispersed in a suitable polymer. The behaviour of the couple hexacyanoferrate(Il/ III) has been reported as a typical model of depolarizer. It has been shown that électrode responses were markedly influenced by the nature of the substrate. Performances of each électrode have been evaluated with regard to the shape of the voltammetrie curves obtained during the investigation of thèse drugs.

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Nouveau Modele d'Electrode Modifiee a Base de Carbone et de Polymere

Cited by 12 publications

References 8 publications

Electrochemical Analysis of Opiates—An Overview

Electrochemical Analysis of Opiates—An Overview

Voltammetric Oxidation of Drugs of Abuse II. Codeine and Metabolites

Voltammetry of pharmaceuticals using different types of modified electrodes

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