Rare-earth elements
Rare Earth Elements and Geochemical Partitioning of Zn and Pb in Sediments of an Urban River
... on Rare Earth Elements (REEs) and geochemical partitioning of Zn and Pb in sediments of 19 sampling sites of Nomi River in order to examine the mobility ...
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Obtenção de samário presente em uma mistura de elementos terras-raras pesados a partir da técnica de extração por solventes / Obtaining samarium in a mixture of heavy-rare earth elements from solvent extraction technique
... of rare earth elements (REEs) in the industry is accomplished mainly by the solvent extraction (SX) ...metallic elements. The separation of the rare earth elements is a ...
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Recovery and separation of rare Earth elements using salmon milt.
... Rare earth elements (REEs) have been used in various advanced materials, including catalysts, alloys, magnets, optics, and lasers, for more than a decade ...other rare metals ...
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Rare earth elements, U and Th in tunnel dusts of São Paulo city, Brazil
... determine rare earth elements (REEs), U and Th mass fractions in tunnel dust, collected in the Jânio Quadros Tunnel, and to assess their possible ...these elements in this kind of matrix in ...
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Uptake and Effects of Six Rare Earth Elements (REEs) on Selected Native and Crop Species Growing in Contaminated Soils.
... Rare earth elements (REEs) have become increasingly important metals used in modern technology. Processes including mining, oil refining, discarding of obsolete equipment con- taining REEs, and the ...
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Mussel shells of <i>Mytilus edulis</i> as bioarchives of the rare earth elements and yttrium distribution in seawater and the potential impact of pH and temperature on the partitioning behaviour
... on major and minor elements such as Mg and Sr, while REY data for mussel shells are still rather scarce and underrepresented. Given the growing importance of mussels in proxy development for the ocean-climate ...
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Rev. Esc. Minas vol.68 número4
... on rare earths in ...a rare earth supply chain, considered as promising and strategic for ...of rare earths was produced with a rare earth composition similar to an actual liquor ...
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Mat. Res. vol.15 número4
... In the present investigation, a systematic study has been made on ultrasonic longitudinal velocity (U L ), shear velocity (U s ) and longitudinal attenuation (α L ) in R 1-x Sr x MnO 3 perovskites manganite materials for ...
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J. Braz. Chem. Soc. vol.28 número10
... All solutions were prepared using deionized water purified by a Milli-Q system (Millipore, Bedford, MA, USA). A Mars 6 microwave oven (Cem, Matthews, NC, USA) was applied for decomposing the flower herb tea samples. A ...
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Use of rare earth oxides as tracers to identify sediment source areas for agricultural hillslopes
... of rare earth ele- ment oxides to arable soils at hillslope scale in order to de- termine sediment source areas and their relative importance, using a non-intrusive method of surface ...and rare ...
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Rev. Esc. Minas vol.62 número1
... Twenty-one samples of hematitite and twelve samples of itabirite were collected from different deposits of the Quadrilátero Ferrífero (QF) area and were analyzed for trace and rare earth elements. ...
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Desenvolvimento de métodos analíticos para determinação de terras raras, Th, U e Y em rochas, solos e sedimentos por ICP-MS
... XIII In this work, the introduction of dissolved geological certified reference materials in the plasma through pneumatic (PN) and ultrasonic (USN) nebulizers was studied, in order to compare both nebulizers’ ...
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Pedogeochemistry of ultramafic soils from the Córrego dos Boiadeiros Body, Quadrilátero Ferrífero, Minas Gerais, Brazil
... The Córrego dos Boiadeiros Body (CBB) comprises a metaultramafic-meta- mafic sequence located in the vicinities of Nova Lima town, central area of the Quadrilátero Ferrífero province. The main rock type is a serpentinite ...
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Rev. Esc. Minas vol.68 número1
... (including rare earth elements) of the siliceous, amphibolitic and magnetitic types of itabirite from the Cauê Formation, sampled in the Serra Azul region (Quadri- látero ...
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J. Braz. Chem. Soc. vol.16 número6A
... the Rare Earth (RE) ...accompanying Rare Earth elements in a CeO 2 sample are the following (ppm): La(36), Pr(19), Nd(161), Sm(11), ...
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Supraglacial dust and debris: geochemical compositions from glaciers in Svalbard, southern Norway, Nepal and New Zealand
... ice samples were measured via inductively coupled plasma mass spectrometry (ICP- MS). Supraglacial debris mineral, bulk oxide and trace element composition were deter- mined via X-ray diffraction (XRD) and X-ray ...
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Synthesis, characterization and thermal studies on solid state 3-methoxybenzoate of lighter trivalent lanthanides
... with rare earth elements [6-12]; the vibrational and electronic spectroscopy study of lanthanides and effect of sodium on the aromatic system of benzoic acid [13-14]; the reaction of divalent cooper, ...
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Geochemical fingerprint of siliceous, amphibolitic and magnetitic itabirite types of the region of Serra Azul – Quadrilátero Ferrífero, MG Caracterização geoquímica dos itabiritos silicoso, anfibolítico e magnetítico da região de Serra Azul - QF, MG
... (including rare earth elements) of the siliceous, amphibolitic and magnetitic types of itabirite from the Cauê Formation, sampled in the Serra Azul region (Quadri- látero ...
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Mat. Res. vol.12 número2
... two rare earth oxides are used simultaneously, the final density results require careful analysis as these mixtures (SN-Y/ La, SN-Y/Yb and SN-Nd/Dy) contain a lesser amount of alumina compared to those ...
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Mat. Res. vol.17 número1
... on rare earths modified PbTiO 3 ceramics, looking for dielectric, piezoelectric and surface acoustic wave (SAW) properties of (Pb,Ln) (Ti,Mn)0 3 ceramics, with Ln = ...the rare earth ionic radii ...
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