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Challenges of Modern Technology
EN The method described in this paper using Dowex Optipore L493 for removal of gold (III), palladium (II), and platinum (IV) ions from hydrochloric solutions is found effective for separation of gold, palladium and platinum. There were carried out laboratory studies of selective removal of platinum (I[...]
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Rudy i Metale Nieżelazne
2011 R. 56, nr 4 231-238
PL Scharakteryzowano podstawowe własności złota, dokonano przeglądu cen w różnych odcinkach czasu oraz omówiono zastosowanie złota, głównie w nanotechnologii. Dokonana charakterystyka okazała się zadaniem wieloetapowym ze względu na wiele dziedzin, których problem złota dotyczy. Poziom wydobycia, jaki [...]
EN In the article analyzed properties of gold, its price review and the application, mainly in nanotechnology. Characterization of the ore is a multistep task due to the application in many scientific fields. Emerging technologies and the increasing interest in gold makes it constantly finding new appl[...]
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Polish Journal of Chemistry
2008 Vol. 82, nr 12 2389-2399
EN The gold influence on catalytic activity, stability and carbon deposition of supported nickel based catalysts was studied. The monometallic 5%Ni/Al2O3 and bimetallic 5%Ni-x%Au/Al2O3 (x = 2, 1, 0.5, 0.25, 0.1) systems were prepared by wet impregnation. The catalytic tests in partial oxidation of meth[...]
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Bulletin of the Polish Academy of Sciences. Technical Sciences
EN Effects from adsorption of organic species on the surface of nanomaterials have been investigated. Exposure to organic contaminants during material processing, handling and environmental exposure is unavoidable during the manufacturing process of nanoscale materials. In addition, at the nanoscale, s[...]
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Polish Journal of Chemistry
2006 Vol. 80, nr 11 1845-1855
EN A convenient method of the synthesis of gold NPs with low polydispersity is described. Triphosphinogold oxonium salt [O(AuPPh3)3]BF4 in the presence of amine and dioxygen is a versatile gold atom source in mesitylene. The amine takes part in the reduction of gold(I) atom precursor. Therefore in a 1/[...]
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Rudy i Metale Nieżelazne
2003 R. 48, nr 12 614-620
PL Opisano rolę złota w przemyśle i gospodarce na przestrzeni dziejów ludzkości, od pierwotnych zastosowań zdobniczo-jubilerskich, przez istotną rolę złota w rozwoju ekonomii i monetaryzmu, aż do współczesnych zastosowań w elektronice i medycynie.
EN The role of gold in the industry and economy in historical perspective has been outlined. The paper covers the period from the primary applications in jewellery manufacture, through the important role of gold in the development of economy and monetarism, to the applications in electronics and medici[...]
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Physicochemical Problems of Mineral Processing
EN Effect of lead nitrate addition on cyanidation of Havran, Ovacık, Mastra LCu (low copper) and Mastra HCu (high copper) gold ores was investigated by laboratory tests at the Ovacik Gold Mine Metallurgy Laboratory. Leach tests were performed at optimum NaCN additions and pH values while different lead[...]
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Nukleonika
EN The application of a Fast Neutron Activation Analysis (FNAA) technique on samples of pure gold, irradiated by a plasma focus of 7 kJ, has been investigated. The reaction was the inelastic scattering of neutrons, 197Au(n,n'gamma)197Aum. To avoid problems connected with peculiar features of the neutro[...]
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Geologia Sudetica
EN he average gold content in the serpentinite and weathered serpentinite rocks of the Szklary massif (20 samples from the surface and 38 samples from boreholes) is about 4.97 ppb; for the individual rock types: 0.72 ppb for the fresh serpentinite, 3.83 ppb for the weathered serpentinite, and 2.59 ppb [...]
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Auxiliary Sciences in Archaeology, Preservation of Relics and Environmental Engineering
2018 nr 25 141--150
PL Przeprowadzono badania mineralogiczne ziarn zlota wystepujących w piaskach i żwirach wPodleciu-Gęstwinie w Górach Złotych. W badaniach wykorzystano mikroskopie skaningową i spektroskopie (EDS). Stwierdzono wysoką czystośc złota i śladowe domieszki Mg, Pb. Ag i F. Wykonano także oznaczenia składu pet[...]
EN Mineralogical investigation of small grains of gold present at sands and gravels of Podlesie-Gestwina (Golden Mountains- South Poland) were performed using SEM and EDS methods. Results document high concentration of gold and small admixture og Mg, Pb, Ag, and F. Petrographic compozition of sediments[...]
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Engineering of Biomaterials
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Polish Journal of Chemistry
2005 Vol. 79 / nr 9 1513-1524
EN The adsorption of urea on gold from aqueous 1MLiClO4 has been determined from measurements of cyclic voltammetry and electrochemical impedance spectroscopy. The film pressure and the Gibbs excess are determined as functions of urea concentrations and potential. The standard free energy of adsorption[...]
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Polish Journal of Chemistry
EN The present work performs the computational Gedanken experiments on an ion photo-electron spectroscopy for the complexes [Au-DNA base]– established between the auride anion Au- and the DNA bases thanks to the nonconventional hydrogen bond where Au- casts as the nonconventional proton acceptor. The f[...]
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Scientific Bulletin. Physics / Technical University of Łódź
2006 Vol. 26 99-106
PL W pracy przedstawiono wysokotemperaturowe syntezy nanocząstek (NCz) złota, które prowadzą do większych rozmiarów cząstek metalu w porównaniu z syntezami przeprowadzanymi w temperaturze otoczenia. zastosowano dwa rodzaje prekursorów atomów złota: kwasu tetracholrozłotowego HAuCl4ܩH2O oraz oksoniowej [...]
EN We report high-temperature pathways for the synthesis of gold nanoparticles (NPs) which lead to larger particles and to narrower polydispersity of their dimensions. Two kinds of gold atom precursors: chloroauric acid HauCl4, and triphosphinogold oxonium salt, {O(AuPPh3)3}BF4, were used. The synthesi[...]
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Physicochemical Problems of Mineral Processing
EN An improved method to model CIP plants by plant data is presented. The Turkish gold cyanide leaching CIP plants, Bergama Ovacik, Gumushane Mastra and Eskisehir Kaymaz were modeled by using gold concentrations of monthly carbon, solution and solids spot samples of adsorption tanks without a need of l[...]
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Physicochemical Problems of Mineral Processing
EN In all working Saudi gold mines, ores are treated using the hazardous cyanidation process. Some Saudi gold ores, such as Al-Amar, is known to be refractory to cyanidation. In this work, we have examined the extraction of gold from Al-Amar gold ore by the much environmentally safer and efficient thio[...]
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Physicochemical Problems of Mineral Processing
EN Gold cyanide leach kinetics modeling was applied to the Bergama Ovacik gold cyanide leach plant in Turkey by processing the real plant data without need of any laboratory work. For this aim, solid ore samples were taken from each leaching tanks and analysed for gold contents as Au ppm while plant va[...]
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Physicochemical Problems of Mineral Processing
EN One of the major issue in gold chloride leaching is a tendency of gold to either precipitate or adsorb on a carbonaceous matter in an ore, i.e. preg-robbing. This paper discusses issues related to a preg-robbing phenomenon in gold hydrometallurgy, specifically in gold chloride-bromide leaching. This[...]
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Archives of Metallurgy and Materials
2017 Vol. 62, iss. 2B 1389--1392
EN Rapid synthesis of gold nanoparticles (AuNPs) by pulsed electrodeposition was investigated in the non-aqueous electrolyte, 1-ethyl-3-methyl-imidazoliumbis(trifluoro- methanesulfonyl)imide ([EMIM]TFSI) with gold trichloride (AuCl3). To aid the dissolution of AuCl3, 1-ethyl-3-met[...]
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Physicochemical Problems of Mineral Processing
EN Naturally, refractory gold is enclosed by sulfide minerals such as pyrite and arsenopyrite and a higher content of organic carbon, which results in difficulty in the recovery of gold. In this study, the flotation gold concentrate before and after pressure oxidation (POX) was analyzed. The analysis o[...]
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