rare earth detection

Study of rare-earth-doped scintillators

Abstract. Scintillators are widely used in radiation detection applications in basic science and industry. Scintillators are generally solids and consist of an emission center and a host lattice. Especially in medical applications that detect high-energy photons, the emission centers are rare-earth (RE) ions, mostly Ce 3+.

Special Issue: Rare earth luminescent materials

Trivalent rare earth ions (Ln 3+) have the unique electronic configurations [Xe]4f n ( n = 0–14) and numerous energy levels, which endow rare earth luminescent …

Fluorescence/colorimetric dual-signal sensor based on rare-earth …

Rare-earth nanosheets delaminated from the LRH were used to prepare the sensor. ... > 0.99). The LOD of the fluorescence method was 0.29 μM, and that of the colorimetric method was 0.058 μM. The detection mechanism can be conclude as a synergistic effect including the combination of dynamic and static quenching, and the …

Identification of rare earth-containing wastes and detection of rare

To develop an effective recovery process of rare earth metals from Dy containing Nd2Fe14B magnets (NdFeB-Dy), the release behavior of rare earth metals (Nd and Dy) and coexisting elements (Fe, B ...

MONITORING OF RARE EARTH POTENTIAL AREAS USING …

The parameters used for rare earth detection are height model, density, gravity, hydrothermal alteration, land cover, and magnetic fields. The results is the potential of rare earth element mining ...

Development of a Rare Earth Nanoprobe Enables In Vivo …

Rare earth-based nanomaterials especially (vs. existing fluorescence probes) have distinct physical and chemical properties, including extensive spectral tunable range, low photobleaching, low cytotoxicity, and narrow emission bandwidths . Such properties are of probable use for highly sensitive, noninvasive detection of SLN …

LIBS Detection of Rare‐Earth Elements and …

Summary. This chapter discusses rare-earth (RE) elements, their importance, and laser-induced breakdown spectroscopy (LIBS) analysis. It provides …

Sensitive determination of rare earth elements in liquid …

1. Introduction. Rare earth elements (REEs), known as modern industrial vitamins, are irreplaceable resources for the development of modern industry and advanced technology, which are widely used in various fields, such as metallurgy, catalysis, electronics, chemical industry and green energy [1].In nature, REEs are rather dispersed …

Determining rare-earth elements in aqueous solutions using …

A PGNAA set-up consisting of a 241Am-Be neutron source and a HPGe detector was proposed to determine rare-earth elements in leachate during infiltration process, and was conducted to analyze samples containing gadolinium, samarium, and neodymium. A good agreement between the experimental net peak areas and the MCNP …

Development of a Rare Earth Nanoprobe Enables In Vivo …

Detection of SLN metastasis largely hinges on examination of frozen sections or paraffin-embedded tissues post-SLN biopsy. To improve detection of SLN metastasis, we developed a second near-infrared (NIR-II) in vivo fluorescence imaging system, pairing erbium-based rare-earth nanoparticles (ErNP) with bright down …

Rare earth elements: A review of applications

The first commercial GD-MS, magnetic sector model VG 9000 ("Thermo Elemental", Winsford, UK) was built in 1985. Taking the detection limits for various REE to sub-μg/g levels (Table 6), this technique is valuable in checking the purity levels of individual rare earth oxides. 11.8. In-situ analytical techniques for REE

Simple and efficient method for detection of traces of rare earth

A simple and efficient method for the detection of traces of rare earth elements in minerals by Raman spectroscopy was proposed in ref. [36]. It has a lower detection limits for the rare earth ...

Paper-based LRET sensor for the detection of total heavy rare-earth …

Rare-earth ions detection in water samples. Aliquots (3 μL) of tap water samples with total heavy rare-earth ions (Equal ratios of Gd 3+, Tb 3+, and Dy 3+ ions) at different concentrations (10, 15, and 50 μmol L −1) were dropped freely …

Wide‐Bandgap Rare‐Earth Iodate Single Crystals for …

These findings provide a new material design perspective for high‐performance X‐ray imaging applications. Keywords: anisotropic response, rare‐earth iodates, wide bandgap, X‐ray detection, X‐ray imaging. A wide‐bandgap rare‐earth iodate Tm (IO 3) 3 single crystal with a low detection limit (85.2 nGy air s −1) is used for ...

New sensor detects valuable rare earth element …

August 25, 2021. Source: Penn State. Summary: A new luminescent sensor can detect terbium, a valuable rare earth element used in smart phone displays, from complex …

Fluorescence-Recovered Wearable Hydrogel Patch for In Vitro Detection …

Rare-earth nanoparticles (RENP … The physiological state of the human body can be indicated by analyzing the composition of sweat. In this research, a fluorescence-recovered wearable hydrogel patch has been designed and realized which can noninvasively monitor the glucose concentration in human sweat.

Portable Mining & Exploration Solutions

Low detection limits allow you to measure concentrations at or below the averages naturally found in the earth's crust – detecting even the most subtle geochemical anomalies. ... Rare Earth Elements (REE) are defined as the 15 lanthanides plus scandium (Sc) and yttrium (Y). Due to their unique optical and magnetic properties, REEs are ...

Chemical sensors for rare earth metal ions

Recent developments of sensors able to detect rare earth metal ions are presented. The review focuses on fluorescent and electrochemical chemosensors that …

Rare-earth Activated Glass and Glass-Ceramic for Neutron Detection

Neutron detection scintillators based on rare-earth activated transparent glass and glass-ceramics are reported. Ce 3+ doped gadolinium halides in 6 LiF modified aluminosilicate glass matrices were synthesized by a melt-quench method followed by annealing. Their optical properties and alpha, neutron scintillation performance were …

Detection of REEs with lightweight UAV-based …

Rare earth elements (REEs) supply is important to ensure the energy transition, e-mobility and ultimately to achieve the sustainable development goals of the …

Enhanced rare-earth separation with a metal-sensitive

Abstract. Technologically critical rare-earth elements are notoriously difficult to separate, owing to their subtle differences in ionic radius and coordination number 1, 2, 3. The natural ...

Rare-earth elements detection using diatomic …

The detection of Rare-Earth-Elements by LIBS by their atomic and ionic emission in many cases is difficult due to significant spectral interferences from other …

Rare-earth elements detection using diatomic molecular …

The detection of Rare-Earth-Elements by LIBS by their atomic and ionic emission in many cases is difficult due to significant spectral interferences from other members of this group and ...

Rare-earth-doped upconversion nanocrystals embedded mesoporous silica

Simultaneous detection of multiple types of microRNA (miRNA) is of great significance in early cancer diagnosis. In this study, rare-earth-doped CaF 2 upconversion nanocrystals (CaF 2: RE 3+, namely Ho 3+ or Tm 3+ and Yb 3+) are formed within the mesopores of silica nanoparticles (CaF 2: RE 3+ @MSN), in an in-situ manner, by …

Synthesis, characterization, and electrochemical properties of rare …

The application of rare earth metals especially in nanocomposites for the detection of hazardous compounds has also been carried out by Huang et al. [72] by synthesizing dysprosium oxide (Dy 2 O 3)‑gold nanoparticles (AuNPs) nanocomposites for electrochemical oxidation of nitrite on glassy carbon electrodes (GCE).

Determination of Rare Earth Elements in Geological

Rare earth elements (REEs) is a peculiar group of chemical elements. ... yttrium and rare earth elements (REE). The "true detection limit" criterion was used for rational wavelength line ...

Rare earth elements: A review of applications

Rare earth elements (REE) include the lanthanide series elements (La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) plus Sc and Y. Currently these metals have become very critical to several modern technologies ranging from cell phones and …

Minerals | Free Full-Text | Detection of Rare Earth …

The numerous applications of rare earth elements (REE) has lead to a growing global demand and to the search for new REE deposits. One promising technique for exploration of these deposits is laser …

The Potential of Reflectance and Laser Induced …

New energy, transport, computer and telecommunication technologies require an increasing supply of rare earth elements (REEs). As a consequence, adequate and robust detection methods become essential for the exploration and discovery of new deposits, the improved characterization of existing deposits and the future recycling of today's high-tech …

Research progress on rare earth up-conversion and near …

Rare earth up-conversion materials have rich emissions in different color regions, which is instrumental to fluorescence detection under different physical and chemical conditions. Furthermore, they still maintain good chemical stability under most acid, alkali conditions, and wide temperature range without pollution.