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Rare-Earth Elements and Geopolitical Concerns

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  Rare-Earth Elements and Geopolitical Concerns Rare-earth elements (REE) are a group of seventeen chemical elements in the periodic table, the fifteen lanthanides as well as yttrium and scandium as defined by the International Union of Pure and Applied Chemistry (IUPAC). Scandium and yttrium are considered REE since they tend to occur in the same ore deposits as the lanthanides and exhibit similar chemical properties.  The REE geochemical classification is usually done on the basis of their atomic weight. One of the most common classifications divides REE into 3 groups: light rare earths elements (LREE - from 57La to 60Nd), intermediate (MREE - from 62Sm to 67Ho) and heavy (HREE - from 68Er to 71Lu). REE usually appear as trivalent ions, except for Ce and Eu which can take the form of Ce4+ and Eu2+ depending on the redox conditions of the system. In lanthanide atoms, the configuration of the valence electrons of the outermost shell is the same for all the species while the 4f...
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Inductively Coupled Plasma Mass Spectrometry (ICP-MS) systems

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    Inductively Coupled Plasma Mass Spectrometry (ICP-MS) Inductively Coupled Plasma Mass Spectrometry (ICP-MS) systems are redefining precision in chemical analysis. These advanced instruments enable ultra-trace detection of metals and non-metals in various samples, making them indispensable in fields like environmental testing, pharmaceuticals, food safety, and materials science. With exceptional sensitivity and a wide dynamic range, ICP-MS systems support industries striving for regulatory compliance and enhanced quality control. As analytical needs become increasingly complex, the versatility of ICP-MS systems stands out. Their ability to perform multi-element analysis and isotopic studies in a single run saves time and resources. From identifying contaminants in drinking water to ensuring the purity of pharmaceutical products, ICP-MS systems empower researchers and industries with accurate, reliable data. Innovations such as collision/reaction cell technology further enha...
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Inductively Coupled Plasma-Mass Spectrometry - Basics Principle

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Inductively Coupled Plasma-Mass Spectrometry Inductively coupled plasma mass spectrometry (ICP-MS) is a type of mass spectrometry that is capable of detecting metals and several non-metals at concentrations as low as one part in 1012 (part per trillion). This is achieved by ionizing the sample with inductively coupled plasma and then using a mass spectrometer to separate and quantify those ions. Compared to atomic absorption techniques, ICP-MS has greater speed, precision, and sensitivity. However, analysis by ICP-MS is also more susceptible to trace contaminants from glassware and reagents. In addition, the presence of some ions can interfere with the detection of other ions. The variety of applications exceeds that of ICP-OES and includes isotopic speciation. Due to possible applications in nuclear technologies, ICP-MS hardware is a subject for special exporting regulations. Inductively coupled plasma An inductively coupled plasma is a plasma that is energized (ionized) by inductivel...
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Inductively Coupled Plasma-Mass Spectrometry

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  Inductively Coupled Plasma-Mass Spectrometry Inductively coupled plasma mass spectrometry (ICP-MS) is a type of mass spectrometry that is capable of detecting metals and several non-metals at concentrations as low as one part in 1012 (part per trillion). This is achieved by ionizing the sample with inductively coupled plasma and then using a mass spectrometer to separate and quantify those ions. Inductively coupled plasma is the plasma that is energized by inductively heating the argon gas with an electrical coil and contains a sufficient concentration of ions and electrons to make the gas electrically conductive. A number of different ICP-MS designs are commercially available today and share similar components such as the nebulizer, spray chamber, plasma torch, interface, and detector.  The liquid sample is pumped into a nebulizer where it is converted into a fine aerosol with argon gas. The fine droplets (1-2%) are separated from larger droplets using a spray chamber. The ...
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