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A common reference material for cadmium isotope studies -- NIST SRM 3108
Citation
Abouchami, W and Galer, SJG and Horner, TJ and Rehkamper, M and Wombacher, F and Xue, Z and Lambelet, M and Gault-Ringold, M and Stirling, CH and Schonbachler, M and Shiel, AE and Weis, D and Holdship, PF, A common reference material for cadmium isotope studies -- NIST SRM 3108, Geostandards and Geoanalytical Research, 37, (1) pp. 5-17. ISSN 1639-4488 (2012) [Refereed Article]
Copyright Statement
Copyright 2012 The Authors. Geostandards and Geoanalytical Research Copyright 2012 International Association of Geoanalysts
DOI: doi:10.1111/j.1751-908X.2012.00175.x
Abstract
Research into natural mass‐dependent stable isotope fractionation of cadmium has rapidly
expanded in the past few years. Methodologies are diverse with MC‐ICP‐MS favoured
by all but one laboratory, which uses thermal ionisation mass spectrometry (TIMS).
To quantify the isotope fractionation and correct for instrumental mass bias, double‐spike
techniques, sample‐calibrator bracketing or element doping has been used. However,
easy comparison between data sets has been hampered by the multitude of in‐house Cd
solutions used as zero‐delta reference in different laboratories. The lack of a suitable
isotopic reference material for Cd is detrimental for progress in the long term. We
have conducted a comprehensive round‐robin assay of NIST SRM 3108 and the Cd isotope
offsets to commonly used in‐house reference materials. Here, we advocate NIST SRM
3108 both as an isotope standard and the isotopic reference point for Cd and encourage
its use as ‘zero‐delta’ in future studies. The purity of NIST SRM 3108 was evaluated
regarding isobaric and polyatomic molecular interferences, and the levels of Zn, Pd
and Sn found were not significant. The isotope ratio 114Cd/110Cd for NIST SRM 3108 lies within ∼ 10 ppm Da−1 of best estimates for the Bulk Silicate Earth and is validated for all measurement
technologies currently in use.
Item Details
Item Type: | Refereed Article |
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Keywords: | isotope geochemistry, intercalibration |
Research Division: | Earth Sciences |
Research Group: | Geochemistry |
Research Field: | Isotope geochemistry |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the earth sciences |
UTAS Author: | Gault-Ringold, M (Dr Melanie East) |
ID Code: | 125194 |
Year Published: | 2012 |
Web of Science® Times Cited: | 67 |
Deposited By: | CRC-Antarctic Climate & Ecosystems |
Deposited On: | 2018-04-06 |
Last Modified: | 2018-05-10 |
Downloads: | 0 |
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