Analytical Application of Silver Composite Electrode

Navrátil, Tomáš; Kopanica, M.

doi:10.1080/10408340290765506

Cited by 37 publications

(21 citation statements)

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“…The effect of underpotential deposition (UPD), which is a typical effect of metallic electrodes [3,15,16,17,18,19,20], is also pronounced in the case of composite silver electrodes [4,5]. The composite silver electrode was also applied for the determination of nitrates, nitrites, nitro compounds, and halides, where the cathodic polarization step was used (e.g., [5,7,21,22,23]). …”

Section: Introductionmentioning

confidence: 99%

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Voltammetry of lead cations on a new type of silver composite electrode in the presence of other cations

2004

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A new type of silver composite electrode was examined, prepared from silver, graphite powder, and methacrylate resin. The effects of the presence of various cations (cadmium, copper, bismuth, thallium), anions (chlorides), surface-active substances (Triton X-100), and oxygen on the anodic-stripping voltammetric determination of lead were studied. It was found that the effect of underpotential deposition at the composite electrode differs from that produced at a metallic silver electrode, mainly at low concentrations of the deposited metal. The use of this type of silver composite electrode in differential pulse anodic-stripping voltammetry enables direct determination of lead in natural water samples without elimination of surface-active substances (LOD about 3 microg L(-1)).

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Section: Introductionmentioning

confidence: 99%

“…The material of a composite electrode is defined as consisting of at least one conductor phase and at least one insulator phase [1,2,3,4,5,6,7]. The surfaces of these electrodes are formed by either ordered or randomly occurring conductor regions separated from each other by insulator.…”

Section: Introductionmentioning

confidence: 99%

Voltammetry of lead cations on a new type of silver composite electrode in the presence of other cations

2004

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“…For that reason, new types of nontraditional electrode materials are being investigated, e.g., electrodes based on solid amalgams of various metals [10 -12] or electrodes based on solid composite materials, which are composed from at least on conductor and at least one insulator phase [13] (e.g., silver composite [14,15], gold composite [16] or graphite composite [17] electrodes) as well as a graphite composite electrode described in this paper. As was reported earlier, it is possible to use these voltammetric electrodes for theoretical electrochemical studies (e.g., underpotential deposition (UPD) effect [18,19]) as well as for analytical purposes (e.g., silver composite [14, 20 -22], gold composite [16], and graphite composite [17] electrodes).…”

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confidence: 99%

Voltammetric Determination of Phenylglyoxylic Acid in Urine Using Graphite Composite Electrode

et al. 2006

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A composite electrode prepared from graphite powder and epoxy resin was applied as a working electrode for the determination of phenylglyoxylic acid (one of the metabolites of styrene) in human urine. Cathodic differential pulse stripping voltammetry was used and optimum conditions have been found giving the limit of determination about 5 mg L À1 . All results were compared with those obtained using hanging mercury drop electrode. For the confirmation of suggested mechanism of the electrochemical reaction the elimination voltammetry with linear scan was used.

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“…The renewal of this film can be fast and simple. These electrodes can be viewed as a thick film analogue of composite electrodes [4,7] which, in dependence on polymer : conductive powder ratio, can behave like a microelectrode array or like a classical electrodes with homogeneous surface.…”

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confidence: 99%

Carbon Powder Based Films on Traditional Solid Electrodes as an Alternative to Disposable Electrodes

2006

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The covering of conventional solid electrode with a film using an ink containing a conductive powder and a polymer enables to broaden the potential window of the original solid electrode. A solid silver amalgam electrode covered with such a film exhibits a potential window from À 600 mV to þ 1400 mV vs. SCE reference electrode. The renewal of the film is fast and simple: the electrode can be simply wiped with a filter paper to remove the old film and immersed into an ink solution or 1 -2 mL of this ink solution can be applied to the surface of the electrode with a micro dispenser to form a new film. Therefore, just the inexpensive film at the electrode surface is disposable and there is no need to dispose the whole, more expensive electrode. Moreover, when a suitable electrochemical pretreatment of the film electrode is applied, the same film can be used for reproducible measurements for several days.

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Analytical Application of Silver Composite Electrode

Cited by 37 publications

References 0 publications

Voltammetry of lead cations on a new type of silver composite electrode in the presence of other cations

Voltammetry of lead cations on a new type of silver composite electrode in the presence of other cations

Voltammetric Determination of Phenylglyoxylic Acid in Urine Using Graphite Composite Electrode

Carbon Powder Based Films on Traditional Solid Electrodes as an Alternative to Disposable Electrodes

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