High-precision isotopic characterization of USGS reference materials by TIMS and MC-ICP-MS
نویسندگان
چکیده
منابع مشابه
Magnesium isotopic composition of igneous rock standards measured by MC-ICP-MS
Keyword: Mg isotopes Igneous rock standards MC-ICP-MS To provide inter-lab comparison for high-precision Mg isotope analysis, Mg isotope compositions (expressed as δMg relative to DSM-3) for commercially accessible peridotite, basalt, andesite, and granite geostandards have been measured by multi-collector inductively coupled mass-spectrometry (Nu-Plasma) using sample-standard bracketing method...
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Introduction: The evidence for the presence of short-lived Fe (decaying into Ni, with the half life of 1.5 Ma) in the early system has recently received considerable attention, both experimentally and theoretically. Evidence for Ni excesses in eucrites, without correlation to Fe/Ni has been obtained by Shukolyukov and Lugmair [1, 2]. Recently, based on ion microprobe studies of phases with very...
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International reference materials representing a diverse suite of sulfide ores and related lithologies have been analyzed for major and trace element concentrations by XRF, solution ICP–MS, and laser-ablation ICP–MS (LA–ICP–MS) after fusion of the sample to a lithium borate glass. Reference materials analyzed for this study include a wide variety of bulk compositions, including ores of Pb–Zn su...
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Biological reference materials with well-characterised stable isotope compositions are lacking in the field of 'isotope biochemistry', which seeks to understand bodily processes that rely on essential metals by determining metal stable isotope ratios. Here, we present Zn stable isotope data for six biological reference materials with certified trace metal concentrations: fish muscle, bovine mus...
متن کاملEvaluation of UV-fs-LA-MC-ICP-MS for precise in situ copper isotopic microanalysis of cubanite.
We evaluated the capabilities of an in situ method for measuring copper isotopes of cubanite using UV-fs-LA-MC-ICP-MS. A comparison of the UV-fs laser results with those obtained from the NIR-fs laser system shows that there is obviously an improvement in the precision (<0.10‰, 2SE) when using the UV-fs laser. In both wavelength modes, matrix-matched standards are required for reliable in situ ...
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ژورنال
عنوان ژورنال: Geochemistry, Geophysics, Geosystems
سال: 2006
ISSN: 1525-2027
DOI: 10.1029/2006gc001283