Issue 2, 2010
From the journal:

Journal of Analytical Atomic Spectrometry

Stable silicon isotope analysis on nanomole quantities using MC-ICP-MS with a hexapole gas-collision cell

Xiaole Sun,*a   Per Andersson,b   Magnus Land,c   Christoph Humborgd  and  Carl-Magnus Mörthe  

* Corresponding authors

a Department of Geology and Geochemistry, Stockholm University, and Laboratory for Isotope Geology, Swedish Museum of Natural History, Stockholm, Sweden
E-mail: xiaole.sun@geo.su.se

b Laboratory for Isotope Geology, Swedish Museum of Natural History, Stockholm, Sweden
E-mail: per.andersson@nrm.se

c WSP Environmental, Stockholm, Sweden
E-mail: magnus.land@WSPGroup.se

d Department of Applied Environmental Science, Stockholm University, Stockholm, Sweden
E-mail: christoph.humborg@itm.su.se

e Department of Geology and Geochemistry, Stockholm University, Stockholm, Sweden
E-mail: magnus.morth@geo.su.se

Abstract

We demonstrate in this study that a single focusing multiple collector inductively coupled plasma mass spectrometer (MC-ICP-MS) equipped with a hexapole gas-collision cell (GV-instrument®Isoprobe) can precisely determine the δ29Si (2S.D., 0.2‰) using a total Si consumption of less than 14 nmole (390 ng Si). Testing and evaluation of background, rinse time, and major matrix effects have been performed in a systematic way to establish a procedure to measure δ29Si in small quantities. Chemical purification prior to analysis is required to remove potential interferences. For data collected during a four-year period, the average δ29Si value of IRMM-018 relative to NBS-28 was found to be −0.95‰ (n = 23, 2S.D. 0.16‰) with a 95% confidence interval (−0.95 ± 0.028‰). The mean δ29Si value of the Big-Batch standard was found to be −5.50‰ (n = 6, 2S.D. 0.26‰). Although determination of the δ30Si measurements is not possible, with our current instrument we demonstrate that this system provides a fast and long-term reliable method for the analysis of δ29Si in purified samples with low Si concentration (18 µM Si).

Graphical abstract: Stable silicon isotope analysis on nanomole quantities using MC-ICP-MS with a hexapole gas-collision cell

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Article information

DOI
https://doi.org/10.1039/B911113A
Article type
Paper
Submitted
08 Jun 2009
Accepted
13 Nov 2009
First published
25 Nov 2009

J. Anal. At. Spectrom., 2010,25, 156-162

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Stable silicon isotope analysis on nanomole quantities using MC-ICP-MS with a hexapole gas-collision cell

X. Sun, P. Andersson, M. Land, C. Humborg and C. Mörth, J. Anal. At. Spectrom., 2010, 25, 156 DOI: 10.1039/B911113A

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