This study investigated the geochemical behavior and aqueous speciation of rare earth elements (REEs) in the geothermal, cold spring, surface waters, and wall rocks in the Havza (Samsun, Turkey) area. The sampled waters have temperatures ranging from 9.8 to 53 °C, pH values between 6.83 and 8.63, and total dissolved solids between 161 …

They include REE, precious metals and other scarce elements, essential trace elements for humans, such as iron, selenium or zinc, and well-known pollutants as …

To evaluate the impact of modern glacier melting on the chemical enrichment of Antarctic coastal waters, we measured trace elements, including dissolved iron (Fe) …

The present study investigates the geochemistry of the shale samples from the Barren Measures Formation of the Jharia Basin through major and trace element distributions as well as through bulk mineralogical attributes. The rare earth element distribution shows the dominance of light rare earth elements (LREEs) over heavy rare …

46 trace elements including 14 rare earth elements (REEs) in coastal Casuarina equisetifolia plant-soil system from 9 sampling sites in Hainan Island were detected by using ICP-MS.

The bedrock-normalized REY pattern revealed an enrichment of light rare-earth elements (LREE) and middle rare-earth elements (MREE), a depletion of heavy rare-earth elements and yttrium (HREY ...

Concentrations of major, trace, and rare-earth elements (REE) were measured in shallow marine limestone samples of the upper Miocene Kudankulam Formation, southern India, in order to investigate ...

Mining activities create disturbed and polluted areas in which revegetation is complicated, especially in northern areas. For the first time, the state of the ecosystems in the impact zone of tailings formed during the processing of rare earth element deposits in the Subarctic have been studied. This work aimed to reveal aspects of accumulation and …

Environmental exposure such as toxic trace elements could be risk factors for hypertension, but the associations of toxic metal exposure with hypertension are not well understood. ... Serum levels of 8 rare earth elements (REEs) and 13 non-REEs were determined. Results: The concentrations of Ce and La were significant higher in the …

Successful management of these rare trace elements (RTEs) requires elucidation of their mobility in the soil–plant system. We aimed to determine the capacity of Lolium perenne (a common pasture species) to tolerate and accumulate the RTEs Be, Ga, In, La, Ce, Nd, and Gd in a fluvial recent soil. Cadmium was used as a reference as a well ...

This order essentially divides trace elements into large ion lithophile (LILE), rare earth elements (REEs), and high field strength elements (HFSE). This trace element order is a pseudo-Onouma …

Abundance: only trace amounts found in the Earth's crust; about 60,000 kilograms produced as a byproduct of nuclear power plants each year Atomic Number: 93 Atomic Weight: ... Americium is another …

Rare Earth Elements. Typical analysis reports the presence of Lanthanum (La), Cerium (Ce) and Praseodymium (Pr) in AZOMITE® at 644 ppm. Confirmed in greenhouse and field conditions to increase crop yields up to 15% in some plant species, particularly if moisture was limiting. Rare Earth Elements may enhance nitrogen fixation by Azotobacter ...

The trace and rare-earth elements are inherently favored in reconstruction of genesis and paleoenvironmental conditions for a number of deposits mostly due to their constrained mobility in soils. PAAS normalized rare-earth patterns of the ore deposit indicate positive correlation with that of the underlying dolostones of the Malmani …

1. Introduction. Rare-earth elements (hereinafter referred to as REE) are a group of seventeen chemical elements in the periodic table, in particular the fifteen …

Minor elements are elements that constitute 1.0 to 0.01 percent of a coal by weight. Common minor elements in coal are sodium, magnesium, aluminum, silicon, phosphorus, potassium, calcium, titanium, manganese, and iron. Most of the minor elements are associated with the minerals in coal, although phosphorus also is …

The tectonic setting interpreted from major oxides, ratios of immobile–trace elements and rare earth elements (REE) parameters such as (La/Y)n, (La/Y)n, (Gd/Yb)n and Eu/Eu* depicts a passive ...

Environmental context Trace elements in coastal environments represent an environmental concern and their monitoring in sediment cores provides insight into their historical sources. A well-dated core from Kiel Bay, western Baltic Sea, provided trace element data, including lead, cadmium, rare earth elements, mercury and methyl …

Major-oxides, loss on ignition (LOI), trace elements, and rare earth element contents analysed by ICP-MS and ICP-AES of 11 manganese oxide-hydroxide samples are given in Table 1. The MnO contents in the Nikopol manganese deposits vary from 32.4 to 54.5 wt% with an average of 40.7%.

News. Metals, metalloids, and radionuclides all are trace elements that occur naturally in the Earth's crust. In small quantities many trace elements are essential for …

The trace elements include more than 60 substances that are usually present in low concentrations in the environment and mammalian tissues. They are generally present in tissue and serum in picogram or microgram amounts, and their absorption, distribution, storage, and excretion are tightly controlled. At least a dozen of them are …

This paper investigates the composition of major, trace, and rare earth elements in 15 different species of wild edible mushrooms and the possible effect of urban pollution on elemental uptake. The collected mushrooms include different species from the green areas of the city, exposed to urban pollution, and from the forests, with limited …

In. addition, determination of trace element abundances in minerals is now possible. through use of techniques which can determine the compositions of small "spots". (10's of microns) using focused beams, such as the ion microprobe (secondary ion. mass spectrometry), or lasers, laser ablation ICP-MS. It is important that a trace.

Gannan navel orange is a famous brand in China, but mineral element content in Gannan navel orange is not systematically studied. In present work, eight trace elements in Gannan navel orange from Jiangxi province were determined by ICP-MS. The results showed that Navel orange fruits contained many kinds of mineral elements, …

Trace element concentrations in seawater can be determined by ICP-MS through external calibration, using certified reference materials or multi-elemental reference standard solutions. ... The efficiency of successive co-precipitations in scavenging rare earth and other trace elements (Hf, Th, Cr, Co, Mn, Y and Zr) from our in house coastal ...

The group consists of yttrium and the 15 lanthanide elements (lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, …

Trace elements refer to any chemical element that is present in the body in very small amounts. Trace elements can be classified as nutritionally essential, probably essential, or potentially toxic. The nutritionally essential elements are required for proper physiological and metabolic functions. … See more

The 17 rare earth elements (REEs) are soft heavy metals with similar properties [7,8]. Other CMs are spread throughout the periodic table, typically situated as alkaline or alkali earth metals, transition metals, and metalloids . Trace elements (or trace metals) occur in low concentrations in rocks, soils, waters, atmosphere, and biota.

Many of the trace elements to which people are regularly exposed are necessary for health, but some have no biologic function. Of the mineral elements discussed here, …

Trace elements are valuable geochemical tools for evaluating ancient and modern systems. Much of the research has focused on the behavior of trace elements under various experimental conditions. These results have been used to decipher the reasons for the distribution patterns of trace elements in numerous natural environments.