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europium
europium anomaly
europium anomaly Most
rare-earth elements exist in the trivalent state. Europium, however, can exist as the Eu
2+ ion and it can proxy for calcium in
plagioclase feldspar during
igneous fractionation. Crystallization of calcic plagioclase thus depletes residual
magmas of europium, relative to the other rare earth elements. The europium anomaly can therefore be used as an indication of the amount of fractionation a magma has undergone. Efforts to explain the marked europium anomaly discovered in
lunar basalts led to much debate about the geochemistry of the
Moon, with suggestions that the europium might have been lost by volatization, retained selectively in the lunar interior, or, more probably, that melting and differentiation caused it to be depleted in the basalts but retained in the highlands.
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Europium discovery.
Newspaper article from: NewsRx Science; 6/21/2009; 700+ words
; ...student at the time -- discovered that europium becomes superconducting at 1.8 K...Pressure-induced Superconducting State of Europium Metal at Low Temperatures." Schilling...Foundation, Division of Materials Research. Europium belongs to a group of elements called...
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Facile fabrication of novel Eu-containing copolymer and luminescent properties.(europium)(Technical report)
Magazine article from: Polymer Engineering and Science; 7/1/2009; ; 700+ words
; INTRODUCTION It is well known that europium complexes show strong and narrow red...decade, an interest has grown in several europium complexes for practical applications...systems (1-4). In general, pure europium complexes do not have good thermal and...
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CHINA-RARE EARTH-EUROPIUM.
Newspaper article from: China Business News; 5/10/2002; 426 words
; New europium electrolytic reduction technology and...Shanghai. May 10. INTERFAX-CHINA - A new europium electrolytic reduction technology and...and facility will be used to produce europium oxide, reported Zhongguo Xitu Wang...
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Quantitative, Rapid Europium(III) Nanoparticle-Label-Based All-in-One Dry-Reagent Immunoassay for Thyroid-Stimulating Hormone
Magazine article from: Clinical Chemistry; 10/1/2004; ; 700+ words
; Long-lifetime fluorescent europium(III) chelate nanoparticles have...antibodies (4). In homogeneous assays, europium(III) nanoparticles have been shown...immunoassay application in which europium(III) nanoparticle labels are used...
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Thenoyl europium chelate (fluorescent dye).(Optional Processes)
Magazine article from: Forensic Science Communications; 1/1/2001; 700+ words
; Thenoyl europium chelate is a fluorescent dye used to...tight lids Materials and Chemicals * Europium chloride hexahydrate (purity [greater...Methanol Mixing Procedure The thenoyl europium chelate process consists of stock and...
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Japanese Inventors Develop Europium Halide Fused Solid Preparation Process
News Wire article from: US Fed News Service, Including US State News; 6/14/2008; 417 words
; ...developed a process for preparing fused solid of europium halide. According to the U.S. Patent & Trademark Office: "Fused solid of an europium halide containing a less amount of europium oxyhalide impurities is prepared by a process...
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Lateral Flow Immunoassay Using Europium (III) Chelate Microparticles and Time-Resolved Fluorescence for Eosinophils and Neutrophils in Whole Blood
Magazine article from: Clinical Chemistry; 2/1/2007; ; 700+ words
; ...chelates of the lanthanides (e.g., europium, samarium). Incorporating these chelates...eosinophils and neutrophils in blood by use of europium (111) chelate micruparticles and time...Fluoromax fluorescent carboxylate-modified europium chelate microparticles (Seradyn) were...
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Gansu Rare Earth Group produces 12 tons of high-purity europium oxide in Feb-Aug.
Newspaper article from: China Business News; 12/9/2002; 455 words
; ...Group produces 12 tons of high-purity europium oxide in Feb-Aug Shanghai. December...produced 12 tons of high-purity europium oxide by August after it started commercial...Research Institute, the high-purity europium oxide can be used as an important material...
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Selective separation of europium using polymer-enhanced ultrafiltration
Magazine article from: Water Environment Research; 3/1/1997; ; 700+ words
; ...polymer binding followed by ultrafiltration for removal of europium (Eu), a nonradioactive surrogate for trivalent actinides...Environ. Res., 69, 244 (1997). KEYWORDS: americium, europium, ion exchange, metal-polymer binding, metal removal...
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Europium shows its superpowers: rare earth is 53rd element to conduct with no resistance.(Matters & Energy)(Brief article)
Magazine article from: Science News; 6/20/2009; ; 700+ words
; ...squeezed, the soft metallic element europium allows electrons to flow unfettered...online May 13 in Physical Review Letters. Europium is the 53rd of the naturally occurring...rare earth metal with a silver color, europium is strongly magnetic at everyday temperature...
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Europium (revised)
Book article from: Chemical Elements: From Carbon to Krypton
EUROPIUM (REVISED) Note: This article, originally...2006 for the eBook edition. Overview Europium was discovered in 1901 by French chemist...difficult to separate from one another. Europium is the most active of the lanthanides...
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Europium
Book article from: Chemistry: Foundations and Applications
Europium melting point: 1,099K boiling point...3most common ions: Eu 3+, Eu 2+ Europium is a metallic element discovered in 1901...These elements have low abundances: Europium occurrence in Earth's crust is only...
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europium anomaly
Book article from: A Dictionary of Earth Sciences
europium anomaly Most rare-earth elements exist in the trivalent state. Europium, however, can exist as the Eu 2+ ion and it...calcic plagioclase thus depletes residual magmas of europium, relative to the other rare earth elements...
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Periodic Table of the Elements: Europium
Book article from: The Columbia Encyclopedia, Sixth Edition
Periodic Table of the Elements: Europium Periodic Table of the Elements: Europium Atomic Number: 63 Atomic Symbol: Eu Europium Atomic Weight: 151.96 Electron Configuration: 2 · 8 ·&thinsp...
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europium
Book article from: The Columbia Encyclopedia, Sixth Edition
europium [from Europe ], metallic chemical element...at 25°C; valence +2 or +3. Europium is a ductile silvery-white metal; it...minerals with the other rare earths . Europium has been identified in the sun and some...
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