Fluorescent Patterning of Polymeric Substrates with Rare-Earth …
The direct, efficient, and controllable patterning of fluorescent materials on polymers is crucial for fundamental research and industrial application but very challenging. Herein, a DBD plasma method was used to deposit rare-earth-doped nanophosphors on the surface of polymeric substrates without thermal annealing steps, aiming to realize fluorescent …
Rare earth element composition of atmospheric …
Rare earth element composition of atmospheric particulates. Mark J. Potts., Charles W. Lee., and. James R. Cadieux. Cite this: Environ. Sci. Technol. 1974, 8, 6, 585–587.
Rare-Earth Elements and Heavy Metals in …
The rare earth elements (REEs) are found in trace quantities in PM 10 with a total concentration (ΣREE) of 0.97 ± 0.59 ng m –3. PMF modeling for source apportionment reveals the contributions of …
Rare earth elements in Precambrian banded iron
Request PDF | Rare earth elements in Precambrian banded iron formations: Secular changes of Ce and Eu anomalies and evolution of atmospheric oxygen | Rare earth element (REE) analyses of ...
Provenance and bioaccessibility of rare earth …
Rare earth elements (REEs) are widely used in optoelectronic industries, and they can be emitted into the environment and may induce biological effects. In this …
Provenances of atmospheric dust over Korea from Sr–Nd isotopes and rare
Geochemical tracers such as rare earth element (REE) concentrations and Sr–Nd isotopic compositions have been also used for this purpose (e.g., ... In the Yellow Sea, atmospheric deposition is the most important nutrient contributor due to the relatively minor contributions of upwelling waters and riverine inputs ...
Rare earth element components in atmospheric particulates in …
In this study, we mainly focused on the concentration and distribution of REEs components in the atmospheric particulates in a representative open-air rare earth mining region of northern China. TSP and PM 10 samples were collected around the Bayan Obo mine region in August 2012 and March 2013, representing the warm and wet season and …
Rare earths release from dissolving atmospheric dust …
Rare earths release from dissolving atmospheric dust and their accumulation into crystallising halite: The Dead Sea example - ScienceDirect. Science of …
Unraveling the sources of major, trace and rare earth …
Major cations (Ca 2+, Mg 2+, Na +, K +), trace elements, and rare earth elements (REE) were determined by high resolution inductively coupled plasma mass spectrometry (ICP-MS, Perkin Elmer Sciex ELAN 9000). A blank and two standards were run for material control and validation of the results IV-STOCK-1643. ... These factors …
Sources and Level of Rare Earth Element …
Rare earth element (REE) composition of atmospheric dust has recently been used to trace potential sources of dust pollution. Objective. The present study …
The Archean atmosphere | Science Advances
The environment of the Archean eon from 4 to 2.5 billion years (Ga) ago has to be understood to appreciate biological, geological, and atmospheric evolution on our planet and Earth-like exoplanets [e.g., (1, 2)].Its most distinguishing characteristic was negligible O 2, unlike today's air, which contains, by dry volume, 21% O 2, 78% N 2, 0.9% Ar, and …
Layers of Earth's Atmosphere | Center for Science Education
The layer of very rare air above the mesosphere is called the thermosphere. High-energy X-rays and UV radiation from the Sun are absorbed in the thermosphere, raising its temperature to hundreds or at times thousands of degrees. ... though very gradually - "leaking" out of Earth's atmosphere into outer space. There is no clear-cut upper ...
Water-soluble rare earth elements in atmospheric deposition …
Atmospheric deposition is an important source of trace elements in speleothems.In a pilot study, atmospheric deposition was collected monthly from Shihua Cave in Beijing, North China, from November 2012 to October 2013, to tentatively investigate the annual fluxes and seasonal variations of the water-soluble rare earth …
Rare earth elements in Precambrian banded iron formations: …
Yasuhiro Kato, Kosei E. Yamaguchi, Hiroshi Ohmoto, 2006. "Rare earth elements in Precambrian banded iron formations: Secular changes of Ce and Eu anomalies and evolution of atmospheric oxygen", Evolution of Early Earth's Atmosphere, Hydrosphere, and Biosphere - Constraints from Ore Deposits, Stephen E. Kesler, Hiroshi …
Designing high-entropy rare-earth zirconates with tunable
The thermal conductivity can be further reduced by adding five rare-earth cations, which is possible in preparing thermal barrier coatings by atmospheric plasma spraying. Basically, in high-entropy rare-earth zirconates, there is a negative correlation between the TEC and the absolute value of the average electronegativity difference of …
Rare Gases | Encyclopedia
The rare gases, also known as the noble gases or the inert gases, are a group of six gaseous elements found in small amounts in the atmosphere: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). Collectively they make up about one percent of Earth ' s atmosphere. They were discovered by scientists near the end of ...
Phytic acid functionalized magnetic adsorbents for
Phytic acid (PA) functionalized magnetic adsorbents was synthesized through simple process. The functionalized sorbents are featured with core-shell structure, good magnetism, chemical stability, selectivity, and fast adsorption/desorption dynamics for the preconcentration of trace rare earth elements (REEs). With the aid of inductively coupled …
Rare Earths: Atmospheric Signatures for Oil-Fired …
Abstract. The concentration pattern of rare earth elements on fine airborne particles (less than 2.5 micrometers in diameter) is distorted from the crustal abundance pattern in …
Parts of the Atmosphere
Vocabulary. We live at the bottom of an invisible ocean called the atmosphere, a layer of gases surrounding our planet. Nitrogen and oxygen account for 99 percent of the gases in dry air, with argon, carbon dioxide, helium, neon, and other gases making up minute port ions. Water vapor and dust are also part of Earth 's atmosphere.
Rare earths release from dissolving atmospheric dust and …
The industrial extraction of Y and lanthanides (hereafter defined as Rare Earth Elements, REE) often requires the achievement of leaching procedures removing these metals from primary rocks and their transfer in aqueous leachates or incorporated in newly forming soluble solids. ... The flux of atmospheric dust resulted high up to ~50 g …
The Most Rare Atmospheric Phenomena on Earth
This atmospheric phenomena might be rare, but it's so spectacular that - unlike the rest of this list - everyone has heard of it. Also known as the Northern Lights or Southern Lights, this amazing light display is predominantly seen in …
(PDF) Atmospheric Signature and Potential Sources …
The atmospheric signature and potential sources of rare earth elements (REEs) in ambient particulate matter (PM) collected at urban (ZH) and background sites (ZWY) between February 2011 and...
Falling metal space junk is changing Earth's upper atmosphere …
Satellites disintegrate as they reenter the Earth's atmosphere, which releases metal pollution. ... Rare magnitude 4.8 and 3.8 earthquakes rock Northeast, including greater New York area .
Phytic acid functionalized magnetic adsorbents for
Phytic acid functionalized magnetic adsorbents for facile enrichment of trace rare earth elements in environmental water, digested atmospheric particulates and the extracts followed by inductively coupled plasma mass spectrometry detection ... Provenance and bioaccessibility of rare earth elements in atmospheric particles in …
Rare-Earth Elements in the Atmospheric Precipitation of the City …
The mineral composition, distribution and fractionation of rare-earth elements in dissolved and suspended forms (solid residue) of atmospheric precipitation were studied by analyzing the snow sampled over urbanized territory by the example of the city of Blagoveschensk. Electron-microscopic studies revealed the own minerals of rare-earth …
Rare earth element components in atmospheric particulates …
The Bayan Obo mine, located in Inner Mongolia, China, is the largest light rare earth body ever found in the world. The research for rare earth elements (REEs) enrichment in atmospheric particulates caused by mining and ore processing is fairly limited so far. In this paper, atmospheric particulates including total suspended …
Behaviour of rare earth sesquioxides exposed to atmospheric …
The behaviour of the rare earth sesquioxides, when exposed to atmospheric water and carbon dioxide under ordinary conditions of temperature and pressure, is reviewed. Data corresponding to eleven samples from seven different oxides systematically investigated by X-ray diffraction (XRD), IR spectroscopy, …
Characteristics and provenances of rare earth elements and …
Rare earth elements (REEs) and Nd isotopes are frequently employed to determine provenance, although their characteristics and provenances in the surface sediments of mangrove wetlands are rarely analyzed. In this study, a thorough analysis of the characteristics and provenances of REEs and Nd isotopes in the surface sediments …
Rare-Earth Elements and Heavy Metals in Atmospheric
To enhance our fundamental understanding of atmospheric PM10 characteristics, rare-earth elements (REEs) and heavy metals were evaluated along with their source apportionment using the positive ...
The fractionation and geochemical characteristics of …
Improved understanding of the fractionation and geochemical characteristic of rare earth elements (REEs) from steel plant emissions is important due to the unclear …