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- W2000310043 abstract "Data are reported for rare earth elements (REE), Y, Th, Zr, Hf, Nb and Ta in four geological reference materials using sodium peroxide (Na2O2) sintering and inductively coupled plasma-mass spectrometry. The described procedure was used by students during their thesis work. A compilation of their reference material data acquired over one year of laboratory work demonstrates the ease and reliability of the method and the high reproducibility of the analytical results. Relative standard deviations of up to thirty six measurements of one reference material were lower than 5% for Y and the REE. Reproduciblities of Zr, Hf, Nb, Ta and Th were higher at between 5% and 10%, and can be attributed to the inhomogeneous distribution of zircon and other trace mineral phases and uncorrected drift effects. The concentration data are compared to reference and literature values and demonstrate that the procedure is also accurate. New data on G-3 show some systematic deviations from G-2, which are statistically significant. Des données de concentrations de Terres Rares, Y, Th, Zr, Hf, Nb et Ta dans quatre matériaux géologiques de référence après agglomération avec Na2O2 ont été analysés par ICP-MS. La procédure décrite a été utilisée par des étudiants durant leur thèse. Une compilation de leurs données acquises pendant plus d' un an de travail de laboratoire sur les matériaux de référence, a montré la facilityé et la fiabilité de la méthode et la grande reproductibilité des résultats analytiques. Les déviations standards relatives sur 36 mesures d' un même matériau de référence étaient inférieures à 5% pour Y et les Terres Rares. Les reproductibilités du Zr, Hf, Nb, Ta, et Th étaient entre 5 et 10 % et peuvent être attribuées à la distribution inhomogène du zircon et des autres phases minérales accessoires et à des effets de dérive mal corrigés. Les données de concentration sont comparées aux valeurs de la littérature et aux valeurs de référence et démontrent que la procédure est aussi juste. De nouvelles données sur G-3 montrent quelques déviations systématiques par rapport à G-2, qui sont statistiquement significatives." @default.
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- W2000310043 date "2002-03-01" @default.
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- W2000310043 title "Determination of Rare Earth Elements, Y, Th, Zr, Hf, Nb and Ta in Geological Reference Materials G-2, G-3, SCo-1 and WGB-1 by Sodium Peroxide Sintering and Inductively Coupled Plasma-Mass Spectrometry" @default.
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- W2000310043 doi "https://doi.org/10.1111/j.1751-908x.2002.tb00623.x" @default.
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