Results 131 to 140 of about 666 (170)
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Massive Human Ingestion of Orpiment (Arsenic Trisulfide)
The Journal of Emergency Medicine, 2013Because the toxicity of arsenic is well known, arsenic-containing compounds have frequently been ingested for suicidal purposes. We report a case of attempted suicide by massive ingestion of arsenic trisulfide, an arsenic mineral of low solubility, which resulted in minimal symptoms.An asymptomatic 57-year-old man presented to an Emergency Department ...
Jennie A, Buchanan +5 more
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Thioarsenate formation upon dissolution of orpiment and arsenopyrite
Chemosphere, 2012Thioarsenates were previously determined as dominant species in geothermal and mineral waters with excess sulfide. Here, we used batch leaching experiments to determine their formation upon weathering or industrial leaching of the arsenic-sulfide minerals orpiment (As(2)S(3)) and arsenopyrite (FeAsS) under different pH and oxygen conditions.
Elke, Suess, Britta, Planer-Friedrich
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Electrochemical Study of Orpiment (As2S3) Dissolution in a NaOH Solution
Hydrometallurgy, 2011Abstract The chemical dissolution mechanism of natural orpiment polycrystals in a 1 M NaOH solution has been investigated using a combination of spectroscopic, chromatographic and electrochemical methods. Two different types of electrodes were used for characterization of dissolution process by open-circuit potential (OCP) measurements, linear sweep (
Angel M Meléndez, Ignacio González
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Pressure Oxidation Kinetics of Orpiment (As2S3) in Sulfuric Acid
Hydrometallurgy, 2007Abstract Pressure oxidation kinetics of a massive orpiment (As 2 S 3 ) sample in sulfuric acid solution were systematically investigated. The effects of temperature (170 to 230 °C), mean particle size (48 to 125 μm diameter) and oxygen partial pressure (345 to 1035 kPa) were evaluated.
David G Dixon
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Studies on Orpiment (As2S3) Quantum Dots and their Self-Assemblies
Australian Journal of Chemistry, 2017The natural mineral orpiment (As2S3) has long been used in traditional medicines for various diseases, although it is poorly soluble and has resulting low bioavailability. In this study, orpiment quantum dots (QDs) belonging to rare V–VI binary QDs were first synthesised through top-down and bottom-up routes, in which a mixture of ethanolamine and ...
Jinzhu Wu +3 more
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Multivariate image analysis of realgar–orpiment flotation froths
Mineral Processing and Extractive Metallurgy, 2017ABSTRACTMultivariate image analysis was used to estimate the arsenic concentrations in froths resulting from the flotation of different mixtures of realgar and orpiment particles in a laboratory batch flotation cell. The realgar floated rapidly and in excess of 90% of the mineral could be recovered after 2 minutes, whereas only 48–75% of the orpiment ...
Aldrich, Chris +4 more
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Orpiment and Realgar in Chinese Technology and Tradition
Journal of the American Oriental Society, 1955AMONG THE MINERAL PIGMENTS known to the Chinese since classical times the most important are the yellows,a the verditers,b ochreC and vermilion.d The present paper is devoted to the members of the class of mineral yellows in their material and spiritual relations throughout Chinese history.
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Structural stability and metallization of orpiment at high pressure
Physica ScriptaAbstract Binary arsenic sulfide compounds have garnered significant attention owing to their wide-ranging physical properties and promising potential in the domains of electronics and optoelectronics. As a naturally abundant and historically significant semiconductor mineral, orpiment (crystalline As2S3) has encountered limited ...
Tian Qin +6 more
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Orpiment on Seventeenth-Century Blue-Coloured Textblock Edges
Studies in Conservationexaly +2 more sources