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Electrochemical study of orpiment (As2S3) and realgar (As2S2) in acidic medium
type: Thing
has publication venue: Journal of the Electrochemical Society
issue: 12
type: Information Content Entity
doi: 10.1149/1.1838154
type: Document
estado: published
type: Generically Dependent Continuant
page end: 4132
related by: authorship 2767
type: Continuant
e iscopus: 2-s2.0-0031353086
origen: scopus
related by: authorship 2764
page start: 4128
abstract: Electrochemical characterizations of high purity natural crystals of orpiment (As2S3) and realgar (As2S2) were performed in the presence of a bacteria-free, acidic bacterial growth medium for Thiobacillus ferrooxidans, name M2. A carbon-paste electrode (CPE), composed of a mixture of pure mineral grains with graphite powder and silicon oil as a binder, was used for the experiments. Reproducibility of the mineral surfaces was assured by monitoring the open-circuit potential (OCP) of the initial CPE-mineral-electrolyte interface. The voltammetric study revealed that the oxidation processes for both of these arsenic-bearing minerals involves two steps: an initial oxidation of the sulfide mineral to H3AsO3 and HSO4-, followed by the oxidation of H3AsO3 to H3AsO4. The reduction processes for the two minerals, however, differ. While the reduction of orpiment occurs in a dual step process, for realgar, the process is achieved in a single step.
volume: 144
crisid: 584
date time value: article date 584
related by: authorship 2765
type: Article
related by: authorship 2766
freetext keyword: Characterization; Crystals; Cyclic voltammetry; Electrochemical electrodes; Electrolytes; Interfaces (materials); Minerals; Optical microscopy; Oxidation; Carbon paste electrode; Electrochemical cell; Open circuit potential; Orpiment; Realgar; Electrochemistry
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most specific type: Document

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Generically Dependent Continuant
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Journal of the Electrochemical Society
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type: Periodical
type: Generically Dependent Continuant
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type: Information Content Entity
publication venue for: Electrochemical study of orpiment (As2S3) and realgar (As2S2) in acidic medium
type: Journal
type: Entity
type: Document

RDF description of Electrochemical study of orpiment (As2S3) and realgar (As2S2) in acidic medium - http://orbis.uaslp.mx/vivo/individual/scopus583
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date: 2026-08-25T07:34:58
publisher: vivo
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