A technique to study the electrochemistry of minerals

Scholz, Fritz; Nitschke, L.; Henrion, Günter; Damaschun, Ferdinand

doi:10.1007/bf00366398

Cited by 110 publications

(49 citation statements)

References 2 publications

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“…Loose particles on the electrode surface were then wiped off with cotton. This sample fixing procedure, which is more forceful than as described in refs [1][2][3] , proved to suit well also for fixing large platelets of goethite and lepidocrocite particles, which was rather difficult by other means.…”

Section: Voltammetric Measurementsmentioning

confidence: 87%

“…A method which does not place very high demands on instrumentation, is well suited to routine phase analysis, and moreover, can be used on a micro scale, has been suggested by Scholz and coworkers 1,2 . The method is based on voltammetric measurement with a carbon electrode to which analyte particles are fixed by rubbing against sample, the authors named the technique "abrasive stripping voltammetry" (henceforth AbrSV).…”

mentioning

confidence: 99%

“…The method is based on voltammetric measurement with a carbon electrode to which analyte particles are fixed by rubbing against sample, the authors named the technique "abrasive stripping voltammetry" (henceforth AbrSV). The method is useful for the analysis and characterization of metal alloys 1 , minerals 2 , various inorganic binary mixtures 3 , pigments 4 , for the study of high-temperature superconductors 5 , for the calculation of thermodynamic constants of low soluble compounds 6,7 , etc. (a survey of applications has been presented in ref.…”

mentioning

confidence: 99%

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Electrochemical Dissolution of Goethite by Abrasive Stripping Voltammetry

Grygar

Šubrt

Boháček

1995

Collect. Czech. Chem. Commun.

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Abrasive stripping voltammetry was applied to the investigation of the reductive dissolution of some iron(III) oxides and hydroxy-oxides, particularly goethite (α-FeOOH), in acid media. The electrode reaction directly involves the solid phase, and the reaction pathway depends on the phase composition and particle shape. This can be used for a qualitative and quantitative characterization of goethite. The results of a quantitative analysis of a mixture of goethite (α-FeOOH) and lepidocrocite (γ-FeOOH) are compared with those of IR and Moessbauer spectroscopic examination. The effects of the particle appearance (shape, crystal intergrowth) on the results of the voltammetric and chronoamperometric measurements are discussed.Direct analysis of powdered solids by electrochemical methods complements nicely conventional phase analysis methods such as powder X-ray analysis, IR spectroscopy and, for iron compounds, Moessbauer spectroscopy. In fact, each of the methods places some specific requirements on the phase crystallinity and particle size and the procedures are instrumentally demanding and time consuming and so that the possibility of resorting to alternative analytical methods is very appealing.A method which does not place very high demands on instrumentation, is well suited to routine phase analysis, and moreover, can be used on a micro scale, has been suggested by Scholz and coworkers 1,2 . The method is based on voltammetric measurement with a carbon electrode to which analyte particles are fixed by rubbing against sample, the authors named the technique "abrasive stripping voltammetry" (henceforth AbrSV). The method is useful for the analysis and characterization of metal alloys 1 , minerals 2 , various inorganic binary mixtures 3 , pigments 4 , for the study of high-temperature superconductors 5 , for the calculation of thermodynamic constants of low soluble compounds 6,7 , etc. (a survey of applications has been presented in ref. 8 ). Since electrode processes can generally involve higher order electrochemical reactions, diffusion, adsorption, and chemical reactions of the substance in the surroundings of the electrode, the overall reaction pathway is very complex 8 and interpretation of the voltammograms requires prior understanding of the conversion mechanism of the substance on the electrode and/or in its surroundings. 950Grygar, Subrt, Bohacek:

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Section: Voltammetric Measurementsmentioning

confidence: 87%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Electrochemical Dissolution of Goethite by Abrasive Stripping Voltammetry

Grygar

Šubrt

Boháček

1995

Collect. Czech. Chem. Commun.

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“…In the 1970s and 1980s, the carbon paste electrodes with both electrolyte and non-electrolyte binders were increasingly used, particularly for mineral analysis by Bauer et al [38], Songina et al [39][40][41], Brainina et al [42,43], Zakharchuk [44,45], and many others. From the late 1980s, the introduction of the voltammetry of immobilized particles (VIMP) by Scholz et al [31,[46][47][48][49] has expanded the scope of the application of solid state electro chemistry for the analysis of solids to a variety of fields [50][51][52][53][54][55][56][57], mainly because the limitations of the previously developed techniques with respect to accessible materials could be overcome. Parallel to the experimental research, the theoretical modelling of the electrochemical processes of solid particles was developed [35,36,53,54,.…”

Section: Electrochemical Methods For the Analysis Of Solidsmentioning

confidence: 99%

Electroanalytical chemistry for the analysis of solids: Characterization and classification (IUPAC Technical Report)

Doménech‐Carbó

Labuda

Scholz

2012

Pure and Applied Chemistry

156

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Solid state electroanalytical chemistry (SSEAC) deals with studies of the processes, materials, and methods specifically aimed to obtain analytical information (quantitative elemental composition, phase composition, structure information, and reactivity) on solid materials by means of electrochemical methods. The electrochemical characterization of solids is not only crucial for electrochemical applications of materials (e.g., in batteries, fuel cells, corrosion protection, electrochemical machining, etc.) but it lends itself also for providing analytical information on the structure and chemical and mineralogical composition of solid materials of all kinds such as metals and alloys, various films, conducting polymers, and materials used in nanotechnology. The present report concerns the relationships between molecular electrochemistry (i.e., solution electrochemistry) and solid state electrochemistry as applied to analysis. Special attention is focused on a critical evaluation of the different types of analytical information that are accessible by SSEAC.

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“…Abrasive stripping voltammetry (AbSV), also known as voltammetry of immobilized microparticles (VMP) is a simple, fast and cheap electrochemical technique first described by F. Scholz in the late 1980's [1,2]. It is a very versatile tool used for solid-state characterization [3,4].…”

Section: Introductionmentioning

confidence: 99%

Quantification of Tin and Lead in Binary Alloys Using Voltammetry of Immobilized Microparticles

Arjmand

Adriaens

2011

Electroanalysis

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Voltammetry of immobilized microparticles (VMP) has been used in this work for the quantitative determination of tin and lead particles in their binary alloys. Carbon paste electrodes, which contained small amounts of tin and lead or their mixtures, were used as working electrodes and square wave voltammograms of each electrode were recorded.Quantification was performed using optimum experimental conditions, obtained by an experimental design technique.The calibration was made by measuring the percentage peak height of each metal taking the sum of peak currents of the both metals as 100 %. The results were compared with quantitative results of X-ray fluorescence (XRF) technique to evaluate the capability of VMP method in its quantitative determination of solid samples.

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A technique to study the electrochemistry of minerals

Cited by 110 publications

References 2 publications

Electrochemical Dissolution of Goethite by Abrasive Stripping Voltammetry

Electrochemical Dissolution of Goethite by Abrasive Stripping Voltammetry

Electroanalytical chemistry for the analysis of solids: Characterization and classification (IUPAC Technical Report)

Quantification of Tin and Lead in Binary Alloys Using Voltammetry of Immobilized Microparticles

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