Determination of Hf–Sr–Nd isotopic ratios by MC-ICP-MS using rapid acid digestion after flux-free fusion in geological materials

Determination of Hf–Sr–Nd isotopic ratios by MC-ICP-MS using rapid acid digestion after... In this study, we established a rapid acid digestion for determining Hf–Sr–Nd isotopic ratios of geological samples by using MC-ICP-MS. Conditions of 1600 °C for 1 min and 1400 °C for 1 min were adopted for fusing intrusive rocks and extrusive rocks, respectively. The rapid acid digestion technique is superior in digestion time compared with high-pressure PTFE bomb method. The procedural blanks of the method were also lower than that flux fusion. Replicate analyses of international certified reference materials (CRMs) indicate that isotopic ratios of 176Hf/177Hf, 87Sr/86Sr and 143Nd/144Nd agree well with previously published data. The external reproducibility (2SD, n = 5) of ten CRMs are ±0.000030 for 87Sr/86Sr, ±0.000030 for 143Nd/144Nd, and ±0.000018 for 176Hf/177Hf. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Chinese Journal of Geochemistry Springer Journals

Determination of Hf–Sr–Nd isotopic ratios by MC-ICP-MS using rapid acid digestion after flux-free fusion in geological materials

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Publisher
Science Press
Copyright
Copyright © 2017 by Science Press, Institute of Geochemistry, CAS and Springer-Verlag GmbH Germany
Subject
Earth Sciences; Geochemistry
ISSN
1000-9426
eISSN
2365-7499
D.O.I.
10.1007/s11631-017-0207-x
Publisher site
See Article on Publisher Site

Abstract

In this study, we established a rapid acid digestion for determining Hf–Sr–Nd isotopic ratios of geological samples by using MC-ICP-MS. Conditions of 1600 °C for 1 min and 1400 °C for 1 min were adopted for fusing intrusive rocks and extrusive rocks, respectively. The rapid acid digestion technique is superior in digestion time compared with high-pressure PTFE bomb method. The procedural blanks of the method were also lower than that flux fusion. Replicate analyses of international certified reference materials (CRMs) indicate that isotopic ratios of 176Hf/177Hf, 87Sr/86Sr and 143Nd/144Nd agree well with previously published data. The external reproducibility (2SD, n = 5) of ten CRMs are ±0.000030 for 87Sr/86Sr, ±0.000030 for 143Nd/144Nd, and ±0.000018 for 176Hf/177Hf.

Journal

Chinese Journal of GeochemistrySpringer Journals

Published: Jul 27, 2017

References

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