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An inter-laboratory...
An inter-laboratory comparison of Si isotope reference materials
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- Reynolds, Ben C. (author)
- IGMR, Erdwissenschaften, ETH Zürich
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- Aggarwal, Jugdeep (author)
- Keck Isotope Laboratory, Department of Earth Sciences, University of California
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- Andre, Luc (author)
- Department of Geology, Musée Royal de l'Afrique Centrale, Leuvensesteenweg
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Baxter, Douglas (author)
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- Beucher, Charlotte (author)
- Department of Ecology Evolution and Marine Biology, Marine Science Institute, University of California
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- Brzezinski, Mark A. (author)
- Department of Ecology Evolution and Marine Biology, Marine Science Institute, University of California
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- Engström, Emma (author)
- Luleå tekniska universitet,Institutionen för samhällsbyggnad och naturresurser
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- Georg, R. Bastian (author)
- IGMR, Erdwissenschaften, ETH Zürich
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- Land, Magnus (author)
- Department of Geology and Geochemistry, Laboratory for Isotope Geology, Stockholm University
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- Leng, Melanie J. (author)
- NERC Isotope Geosciences Laboratory, British Geological Survey, Keyworth, Nottingham
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- Opfergelt, Sophie (author)
- Department of Geology, Musée Royal de l'Afrique Centrale, Leuvensesteenweg
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- Rodushkin, Ilya (author)
- Luleå tekniska universitet,Geovetenskap och miljöteknik
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- Sloane, Hilary J. (author)
- NERC Isotope Geosciences Laboratory, British Geological Survey, Keyworth, Nottingham
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- van den Boorn, Sander H. J. M. (author)
- Department of Earth Sciences, Utrecht University
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- Vroon, Pieter Z. (author)
- Department of Petrology, FALW, Vrije Universiteit, De Boelelaan
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- Cardinal, Damien (author)
- Department of Geology, Musée Royal de l'Afrique Centrale, Leuvensesteenweg
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(creator_code:org_t)
- 2007
- 2007
- English.
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In: Journal of Analytical Atomic Spectrometry. - : Royal Society of Chemistry (RSC). - 0267-9477 .- 1364-5544. ; 22:5, s. 561-568
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Three Si isotope materials have been used for an inter-laboratory comparison exercise to ensure reproducibility between international laboratories investigating natural Si isotope variations using a variety of chemical preparation methods and mass spectrometric techniques. These proposed standard reference materials are (i) IRMM-018 (a SiO2 standard), (ii) Big-Batch (a fractionated SiO2 material prepared at the University of California Santa Barbara), and (iii) Diatomite (a natural diatomite sample originally deposited as marine biogenic opal). All analyses are compared with the international Si standard NBS28 (RM8546) and are in reasonable agreement (<+/- 0.22 parts per thousand. 1 sigma(SD) delta Si-30) given the different measurement techniques involved. These methods include both acid and alkaline dissolution/fusion, Si separation using cation exchange, selective co-precipitation, and gas-source versus plasma-ionization (high and low resolution) mass-spectrometric techniques. The average delta Si-30 for Diatomite, IRMM-018, and Big-Batch are + 1.26 parts per thousand, -1.65 parts per thousand and -10.48 parts per thousand, respectively, with corresponding delta Si-9 values of + 0.64 parts per thousand, -0.85 parts per thousand and -5.35 parts per thousand for the same standards, respectively. For the most fractionated standard (Big-Batch), results demonstrate a kinetic mass-dependent fractionation effect for atomic Si (i.e., delta Si-29 similar to 0.51 x delta Si-30). There is almost no statistical difference between the mean values obtained by each participating laboratory, with the notable exception of the IRMM-018 standard. This effect could be caused by heterogeneity or contamination of this standard. The results for the other two standards indicate that data sets produced using any of the methods employed in this study will have similar precision and differences are limited to 0.2 parts per thousand in mean delta Si-30 values for a given sample between laboratories, or differences of 0.13 parts per thousand. in mean delta Si-29 values.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geokemi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geochemistry (hsv//eng)
Keyword
- Applied Geology
- Tillämpad geologi
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Reynolds, Ben C.
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Aggarwal, Jugdee ...
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Andre, Luc
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Baxter, Douglas
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Beucher, Charlot ...
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Brzezinski, Mark ...
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Engström, Emma
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Georg, R. Bastia ...
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Land, Magnus
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Leng, Melanie J.
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Opfergelt, Sophi ...
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Rodushkin, Ilya
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Sloane, Hilary J ...
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van den Boorn, S ...
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Vroon, Pieter Z.
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Cardinal, Damien
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Geochemistry
- Articles in the publication
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Journal of Analy ...
- By the university
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Luleå University of Technology