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Issue 10, 2002
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Precise determination of the isotopic composition of Sn using MC-ICP-MS

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Abstract

High precision isotopic measurements of Sn in two commercially available high purity materials and a previously analysed cassiterite from Straits Settlement, Malaysia, are presented as a basis for a new measurement procedure using the Micromass IsoProbe MC-ICP-MS. The results show that under optimised instrumental conditions two laboratory calibration standard solutions (Johnson–Matthey Puratronic Grade 1 Sn metal foil and Specpure ICP/DCP Sn solution) are isotopically identical and an external reproducibility of 0.000017 2 s.d. at 150 ppb Sn concentration (122Sn/116Sn 0.318597, n = 14) can be achieved. An isotopic fractionation of +0.13‰/u (1.3 epsilon units) relative to these in-house standards has been verified for the cassiterite, which indicates a natural isotopic fractionation of approximately 2.8 times greater than the long-term reproducibility of the current optimised measurement procedure.

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Article information


Submitted
20 Jun 2002
Accepted
13 Aug 2002
First published
09 Sep 2002

J. Anal. At. Spectrom., 2002,17, 1248-1256
Article type
Paper

Precise determination of the isotopic composition of Sn using MC-ICP-MS

R. Clayton, P. Andersson, N. H. Gale, C. Gillis and M. J. Whitehouse, J. Anal. At. Spectrom., 2002, 17, 1248
DOI: 10.1039/B205835A

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