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 ...

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 …

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 …

A LIBS method for analyzing rare earth elements in liquid samples was developed and tested.. Adoption of groove constraint liquid–solid conversion preprocessing to improve signal stability and reproducibility. • Spatial confinement assisted surface-enhanced laser-induced breakdown spectroscopy (SC-SE-LIBS) was used in the study …

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 …

Our previous work [3], [4] demonstrated the ability to synthesize transparent, highly luminescent, fast scintillators for X-ray and gamma-ray detection. Previously synthesized cerium-activated mixed-alkali rare-earth lutetium-double-phosphate scintillators have been characterized using photoluminescence (PL) techniques, alpha particle …

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.

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

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 ...

We also demonstrated that the rare-earth masking strategy is a versatile method to suppress the interference of Dpa-Zn II complex-based chemosensor by Pi and allow for specific arsenate detection ...

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 …

As a result, Ln 3+ - sensitized fluorescence method has been a useful tool for DPA detection. In recent years, layered rare-earth hydroxide (LRH), has been widely investigated and applied in various fields such as catalysts, adsorbents and luminescence [26], [27], [28]. Delamination is one kind of the important properties of LRH.

Out of many rare earth lanthanide materials, Terbium and Europium were much more attractive due to their wide range of luminescence from ultraviolet (UV)- Visible to near-infrared spectral ranges (NIR) with fluorescence emission in the green and red regions of the electromagnetic spectrum. ... Detection of melamine in different preserved …

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 …

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 …

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+.

In this paper, ZnS QDs are doped with the rare-earth element Ce to form a low-toxicity double-emission ratiometric fluorescent sensor, ZnS:Ce, for Hg 2+ detection. The results of transmission electron microscopy (TEM), X …

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 ...

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.

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 …

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

For gas sensing, rare-earth doping can improve the response and selectivity of In 2 O 3-based gas sensors in the detection of ethanol. In particular, among all tested RE-doped In 2 O 3 NTs, the Tb-doped In 2 O 3 gas sensor exhibited the highest response to various gases and especially to ethanol.

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 ...

In addition, rare-earth based materials can be used to detect, treat, and regulate of brain diseases through fine modulation of their structures and functions. …

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 …

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 ...

Similar fluorescence enhancement properties of other rare-earth ion-labeled nanoparticles have also been reported for the detection of various antibiotics [29, 30]. Therefore, integrating the abovementioned rare-earth ion-labeled nanoprobes and designing a fluorometric sensors array are necessary for the simultaneous detection of …

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

FULL STORY. A new luminescent sensor can detect terbium, a valuable rare earth element, from complex environmental samples like acid mine waste. The sensor, developed by researchers at Penn State ...

In conclusion, this special issue focuses on recent progress made with rare earth luminescent materials and considers designs, preparation methods and applications in lighting, displays, sensing ...