Electrochemical dissolution of magnetite in acid solutions

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

“…• Solid electrodes made of the material under investigation, e.g., for the analysis of minerals with semiconducting properties, typically magnetite [98][99][100] and galena [101][102][103]. Usually, the electrodes consisted of bars of the studied material housed in a Teflon shaft.…”

Mapping of corrosion products of highly altered archeological iron using voltammetry of microparticles

“…Thus, Brainina et al have associated the initial reduction of the mineral to the non-stoichiometry of the same [47]:…”

“…3b), possibly due to the reduction of Fe 2+ ions, generated in previous reductive dissolution steps, to iron metal. The electrochemical reduction of magnetite at +0.10 V can be represented as [40,41,46,47]:…”

“…These are based on the use of conventional and graphite pencil [36,37] plus 'one-touch' [6] sampling strategies. The electrochemistry of several of the most frequent corrosion products of iron, namely, hematite, goethite, magnetite and siderite, has been studied in the context of mineral [38][39][40][41][42][43][44][45][46][47][48] and pigment [49][50][51] analyses. To the best of our knowledge, however, other corrosion products, namely, akaganeite and jarosite have not been previously studied.…”

Modified carbon-containing electrodes in stripping voltammetry of metals

“…The CPEE methodology significantly increased the scope of electrochemistry to poorly conducting and insoluble solids. CPEE is used to analyze lead sulfides, magnetite, oxides of silver, tin, copper, and iron, bromides of rare-earth elements, nickel-containing compounds and other solids, e.g., ceramics and classes [314][315][316][317][318]. A comprehensive review [319] is dedicated to the electrochemical analysis of solids.…”