Journal
GEOSTANDARDS AND GEOANALYTICAL RESEARCH
Volume 35, Issue 2, Pages 227-234Publisher
WILEY
DOI: 10.1111/j.1751-908X.2010.00080.x
Keywords
glass reference materials; uranium; thorium; MPI-DING; LA-ICP-MS; SIMS; U-series
Categories
Funding
- Office of Science, Basic Energy Sciences, Chemical Sciences, Geosciences and Biosciences Division of the U.S. Department of Energy [2009LANLE391]
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Here we report uranium and thorium isotopic ratios and elemental concentrations measured in solid reference materials from the USGS (BHVO-2G, BCR-2G, NKT-1G), as well as those from the MPI-DING series (T1-G, ATHO-G). Specifically created for microanalysis, these naturally-sourced glasses were fused from rock powders. They cover a range of compositions, elemental concentrations and expected isotopic ratios. The U-Th isotopic ratios of two powdered source materials (BCR-2, BHVO-2) were also characterised. These new measurements via multi-collector thermal ionisation mass spectrometry and multi-collector inductively coupled plasma-mass spectrometry can now be used to assess the relative performance of techniques and facilitate comparison of U-Th data amongst laboratories in the geoscience community for in situ and bulk analyses.
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