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 …

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 …

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.

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 …

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 …

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 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 ...

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 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 …

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 …

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 ...

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 …

Improved understanding of the fractionation and geochemical characteristic of rare earth elements (REEs) from steel plant emissions is important due to the unclear …

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 .

Concentrations of 14 rare earth elements (REEs) in six size classes of airborne particulate matter (APM) (<0.43, 0.43-0.65, 0.65-1.1, 1.1-2.1, 2.1-11, and >11 μm) and in two different phases (suspended particulate and dissolved) in rainwater were determined by inductively coupled plasma mass s …

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.

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, …

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 …

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)

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

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 …

From largest to smallest, Earth's atmosphere composition contains nitrogen, oxygen, argon, CO 2, and trace gases. Because water vapor is highly variable geographically, it's excluded from this total. 1. Nitrogen (78.1%) While nitrogen is the most abundant gas in Earth's atmosphere, it only makes up 0.005% of Earth's crust in weight ...

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...

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 ...

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 …

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. In this paper, atmospheric particulates including total suspended particulate (TSP) matter and particles with an equivalent …

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 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 …