europium


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Related to europium: europium oxide

eu·ro·pi·um

 (yo͝o-rō′pē-əm)
n. Symbol Eu
A silvery-white, soft, ductile element of the lanthanide series occurring in the minerals monazite and bastnaesite and used to dope glass and plastics for lasers and to absorb neutrons in research. Europium oxides provide important phosphors for cathode-ray tubes and low-energy lighting applications. Atomic number 63; atomic weight 151.96; melting point 822°C; boiling point 1,596°C; specific gravity 5.244; valence 2, 3. See Periodic Table.

[After Europe.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

europium

(jʊˈrəʊpɪəm)
n
(Elements & Compounds) a soft ductile reactive silvery-white element of the lanthanide series of metals: used as the red phosphor in colour television and in lasers. Symbol: Eu; atomic no: 63; atomic wt: 151.965; valency: 2 or 3; relative density: 5.244; melting pt: 822°C; boiling pt: 1527°C
[C20: named after Europe + -ium]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

eu•ro•pi•um

(yʊˈroʊ pi əm, yə-)

n.
a rare-earth metallic element whose salts are light pink. Symbol: Eu; at. wt.: 151.96; at. no.: 63.
[< French (1901); see Europe, -ium2]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

eu·ro·pi·um

(yo͝o-rō′pē-əm)
Symbol Eu A very rare, silvery-white metallic element that is the softest member of the lanthanide series. It is used in making color television tubes and lasers and in scientific research. Atomic number 63. See Periodic Table.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.europium - a bivalent and trivalent metallic element of the rare earth groupeuropium - a bivalent and trivalent metallic element of the rare earth group
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
monazite - a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
европий
europium
europium
euroopium
europium
europium
europij
európium
ユウロピウム
europium
europis
europium
europ
europiu
europium
evropij
europium
References in periodicals archive ?
Physicochemical and luminescence properties of some organic complexes of europium and terbium.
Europium chelate labels in time-resolved fluorescence immunoassays and DNA hybridization assays.
In the middle of the 20th century, there was little demand for rare earth minerals, but as soon as colour television boomed, its use spiked, particularly europium. The Mountain Pass Mine took advantage of this and became the dominant miner at the time.
Europium is vital in the development of phosphors and ceramics and has applications in the defence and nuclear sectors.
[9] also studied the structure and emission spectrum of the europium cryptate containing 3,3-biisoquinoline-2,2-dioxide with the framework of the Sparkle/AM1 model and Judd--Ofelt theory.
This work describes the synthesis of [[LiGd.sub.(1-x)][Eu.sub.x](P[O.sub.3]).sub.4] polyphosphate, doped with different low percentages of europium (2 and 4%).
The use of terbium instead of europium resulted in approximately a 30-50% enhancement in the analytical signal, so terbium ions were used for further experiments.
Europium had been found in half of the samples (M3, M4 and M6), while the other specimens did not show the presence of this element.
The reagents included in the kit are calibrator paper cassettes with spots prepared from sheep blood enriched with human CK-MM, control paper cassettes with spots prepared from human blood enriched with human CK-MM, microtitration strips coated with mouse monoclonal CK-MM antibodies, tracer reagent containing europium chelate-labeled mouse monoclonal CK-MM antibodies in buffered salt solution with BSA, and a ready-for-use Tris-buffered salt solution with BSA, bovine globulin, Tween[R] 20, diethylenetriaminepenta-acetic acid, polyethyleneglycol 6000, blockers, and sodium azide.
It is well known that the europium ionic radius is similar to [Cr.sup.3+], [As.sup.3+], and [Ac.sup.3+] radii, which results in a similar physicochemical behavior [49].
White light emission in europium doped phosphate glasses was obtained by Fan et al.
Although the absorption cross section luminescence efficiency of lanthanides can be improved using organic ligands and energy transfer (antenna effect), the chelate molecules luminescence is quenched by PMMA nonradiative transitions and efficient luminescence can be observed only for triplet state europium ([Eu.sup.3+]) and terbium ([Tb.sup.3+]) complexes [19-26].