New loading method for high precision Sm isotope analysis of nuclear materials using thermal ionization mass spectrometry

Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials

“…267 For the microdroplet generation, the He carrier ow rate used was 0.5 L min −1 with a droplet generation frequency of 50 Hz. For IDMS the 194 Pt : 195 Pt isotope ratio was used with mass bias monitored via the 182 W : 183 W isotope ratio. The ID-MDG-sNP-ICP-TOF-MS approach was used for the size determination of three different sizes of Pt NPs (50 nm, 63 nm, 70 nm diameter) and the results compared with those obtained using sNP-ICP-TOF-MS and TEM.…”

“…The technique of TIMS was also the focus of a study by Louis-Jean et al to achieve high precision Sm isotopic analysis of nuclear materials , focusing on a Pt activator as a new loading method. 183 Aliquots of 1–20 ng were loaded onto a single Re filament using a static non-evaporation technique. Applications for nuclear samples and monitoring neutron irradiation exposure, as well as geological samples were envisaged.…”

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

“…Using ID it was possible to measure the quantity of 90 Sr down to 0.029 fg. High-precision analysis of Sm isotopes in nuclear materials was the subject of a study by Louis-Jean et al 192 who used a TIMS instrument with Pt activator on a Re lament and a total evaporation analysis. One aim of the study was to detect the short-lived ssion product 147 Nd which beta decays to 147 Sm.…”

Thermal Analysis of Benzotriazolium Perrhenate and Its Implication to Rhenium Metal

“…Rhenium is among the least abundant element in the Earth’s crust. However, the remarkable properties of rhenium (e.g., high melting point and corrosion resistance) and its naturally occurring isotopes (e.g., 187 Re/ 187 Os ratio , for geological dating) allow the element to find application in various technological fields. − The element is obtained from the process and purification of certain mineral concentrates (e.g., molybdenites, gadolinite, and copper-porphyry deposit). , Noddack, Tacke, and Berg are credited for the discovery of the element as they were able to recover 1 g of rhenium by processing 660 kg of molybdenite ores in 1925. − Such ores remain as the essential source of rhenium for commercial and industrial use. During the pyrometallurgical roasting process of molybdenite ores containing rhenium, solid molybdenum trioxide and volatile dirhenium heptoxide species are produced.…”