An inter-laboratory assessment of the thorium isotopic composition of synthetic and rock reference materials

Kenneth W.W. Sims; James B. Gill; Anthony Dosseto; Dirk L. Hoffmann; Craig C. Lundstrom; Ross W. Williams; Lary Ball; Darren Tollstrup; Simon Turner; Julie Prytulak; Justin J.G. Glessner; J. J. Standish; Tim Elliott

doi:10.1111/j.1751-908X.2008.00870.x

An inter-laboratory assessment of the thorium isotopic composition of synthetic and rock reference materials

Kenneth W.W. Sims, James B. Gill, Anthony Dosseto, Dirk L. Hoffmann, Craig C. Lundstrom, Ross W. Williams, Lary Ball, Darren Tollstrup, Simon Turner, Julie Prytulak, Justin J.G. Glessner, J. J. Standish, Tim Elliott

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134 Scopus citations

Abstract

We present a concerted international effort to cross-calibrate five synthetic Th isotope reference materials (UCSC Th "A", OU Th "U", WUN, IRMM-35 and IRMM-36), and six rock reference materials (UCSC TML, Icelandic ATHO, USGS BCR-2, USGS W-2, USGS BHVO-2, LV18) using multi-collector inductively coupled plasma-mass spectrometry (MC-ICP-MS). We then compare our new values with a compilation of literature mass spectrometric data for these reference materials and derive recommended "consensus" ²³⁰Th/²³² Th values for each. We also present isotope dilution U and Th concentration data for four rock reference materials (UCSC TML, Icelandic ATHO, USGS BCR-2, USGS W-2).

Original language	English (US)
Pages (from-to)	65-91
Number of pages	27
Journal	Geostandards and Geoanalytical Research
Volume	32
Issue number	1
DOIs	https://doi.org/10.1111/j.1751-908X.2008.00870.x
State	Published - Mar 2008
Externally published	Yes

Keywords

Consensus values
Isotope ratios
MC-ICP-MS
Rock reference materials
Thorium

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Sims, K. W. W., Gill, J. B., Dosseto, A., Hoffmann, D. L., Lundstrom, C. C., Williams, R. W., Ball, L., Tollstrup, D., Turner, S., Prytulak, J., Glessner, J. J. G., Standish, J. J., & Elliott, T. (2008). An inter-laboratory assessment of the thorium isotopic composition of synthetic and rock reference materials. Geostandards and Geoanalytical Research, 32(1), 65-91. https://doi.org/10.1111/j.1751-908X.2008.00870.x

Sims, KWW, Gill, JB, Dosseto, A, Hoffmann, DL, Lundstrom, CC, Williams, RW, Ball, L, Tollstrup, D, Turner, S, Prytulak, J, Glessner, JJG, Standish, JJ & Elliott, T 2008, 'An inter-laboratory assessment of the thorium isotopic composition of synthetic and rock reference materials', Geostandards and Geoanalytical Research, vol. 32, no. 1, pp. 65-91. https://doi.org/10.1111/j.1751-908X.2008.00870.x

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AU - Gill, James B.

AU - Dosseto, Anthony

AU - Hoffmann, Dirk L.

AU - Lundstrom, Craig C.

AU - Williams, Ross W.

AU - Ball, Lary

AU - Tollstrup, Darren

AU - Turner, Simon

AU - Prytulak, Julie

AU - Glessner, Justin J.G.

AU - Standish, J. J.

AU - Elliott, Tim

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AB - We present a concerted international effort to cross-calibrate five synthetic Th isotope reference materials (UCSC Th "A", OU Th "U", WUN, IRMM-35 and IRMM-36), and six rock reference materials (UCSC TML, Icelandic ATHO, USGS BCR-2, USGS W-2, USGS BHVO-2, LV18) using multi-collector inductively coupled plasma-mass spectrometry (MC-ICP-MS). We then compare our new values with a compilation of literature mass spectrometric data for these reference materials and derive recommended "consensus" 230Th/232 Th values for each. We also present isotope dilution U and Th concentration data for four rock reference materials (UCSC TML, Icelandic ATHO, USGS BCR-2, USGS W-2).

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An inter-laboratory assessment of the thorium isotopic composition of synthetic and rock reference materials

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Keywords

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