rare earth atmospheric

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 ...

Unraveling the sources of major, trace and rare earth elements in the waters of a high latitude proglacial environment: Weathering vs. atmospheric signature in Northern Patagonia. Author links open overlay panel Laura Sepúlveda a b, Andrea Pasquini a b, Pedro Temporetti c, Karina Lecomte a b. Show more.

Rare earth elements (REEs) have been increasingly emitted into the atmosphere with a worldwide increase in use of these metals. However, the research on REEs in atmospheric particulates is fairly limited.

A persistently low level of atmospheric oxygen in Earth's middle age. Xiao-Ming Liu, Linda C. Kah, Andrew H. Knoll, Huan Cui, Chao Wang, Andrey Bekker & …

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.

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 ...

Rare earth elements (REEs) are typically conservative elements that are scarcely derived from anthropogenic sources. The mobilization of REEs in the environment requires the monitoring of these elements in environmental matrices, in which they are present at trace level. The determination of 11 REEs in carpet-forming moss species (Hypnum …

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 …

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 .

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 …

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 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.

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 ...

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 …

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 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 ...

Background: Rare earth element (REE) composition of atmospheric dust has recently been used to trace potential sources of dust pollution. Objective: The present study aimed to determine the sources of atmospheric pollution in the study area using REE patterns and determine their level of pollution. Methods: Twenty-five (25) atmospheric …

Atmospheric particulate matter (APM) was collected at three sampling sites in Beijing, China, from February to June 1998. The concentrations of rare earth elements (REE) and cobalt (Co), zinc (Zn), copper (Cu), cadmium (Cd) and lead (Pb) in the APM were determined by inductively coupled plasma mass spectrometry (ICP-MS).

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 …

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 ...

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...

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 …

Rare earths release from dissolving atmospheric dust and their accumulation into crystallising halite: The Dead Sea example - ScienceDirect. Science of …

Rare earth elements (REEs) are typical materials in optoelectronic industries; however, the effects of optoelectronic industry on the presence of REEs in atmospheric particle (AP) have seldom been reported. Thus, we investigated the provenance of REEs in APs collected from a coastal city in Southeast China, where there are many …

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 …

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 …

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 ...

Rare earth element (REE) composition of atmospheric dust has recently been used to trace potential sources of dust pollution. Objective. The present study …

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 …

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 …

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 ...

Background. Rare earth element (REE) composition of atmospheric dust has recently been used to trace potential sources of dust pollution. Objective. The present study aimed to determine the sources of atmospheric pollution in the study area using REE patterns and determine their level of pollution. Methods. Twenty-five (25) atmospheric …

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 study, we investigated the provenance and bioaccessibility of REEs in atmospheric particles (APs) collected from areas impacted by the optoelectronic industry.

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 …

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 …

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 …

Intensive exploitation activities of rare earth resources have caused the substantial increases of 232 Th contents in the environment (Li et al., 2014). Thorium was released into the atmosphere as aerosol particles from mining, milling, processing operations of rare earth minerals, and particle resuspension from tailing piles.

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 study, we investigated the provenance and bioaccessibility of REEs in atmospheric particles (APs) collected from areas impacted by the opto …

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 …

The effects of the rare earth (RE) elements Ce and La treatment on the atmospheric corrosion properties of Zr-Ti deoxidized low alloy steel were investigated through immersion test and long-term wet/dry cyclic corrosion test, and the obtained results are summarized as follows: (1)