NDLI: Inter-calibration of a proposed new primary reference standard AA-ETH Zn for zinc isotopic analysis

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Inter-calibration of a proposed new primary reference standard AA-ETH Zn for zinc isotopic analysis

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Journal of Analytical Atomic Spectrometry Vol - 32 Issue - 1

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Inter-calibration of a proposed new primary reference standard AA-ETH Zn for zinc isotopic analysis

Content Provider	Royal Society of Chemistry (RSC)
Author	Cloquet, Christophe Dong, Shuofei Ellwood, Michael Nelson, Joey Andersen, Morten B. Wasylenki, Laura Moore, Rebekah Takano, Shotaro Archer, Corey Conway, Tim M. Rehkämper, Mark Samanta, Moneesha Rouxel, Olivier Shin, Ki-Cheol Sohrin, Yoshiki
Copyright Year	2017
Abstract	We have prepared a large volume of pure, concentrated and homogenous zinc standard solution. This new standard solution is intended to be used as a primary reference standard for the zinc isotope community, and to serve as a replacement for the nearly exhausted current reference standard, the so-called JMC-Lyon Zn. The isotopic composition of this new zinc standard (AA-ETH Zn) has been determined through an inter-laboratory calibration exercise, calibrated against the existing JMC-Lyon standard, as well as the certified Zn reference standard IRMM-3702. The data show that the new standard is isotopically indistinguishable from the IRMM-3702 zinc standard, with a weighted δ66/64Zn value of 0.28 ± 0.02‰ relative to JMC-Lyon. We suggest that this new standard be assigned a δ66/64Zn value of +0.28‰ for reporting of future Zn isotope data, with the rationale that all existing published Zn isotope data are presented relative to the JMC-Lyon standard. Therefore our proposed presentation allows for a direct comparison with all previously published data, and that are directly traceable to a certified reference standard, IRMM-3702 Zn. This standard will be made freely available to all interested labs through contact with the corresponding author.
Starting Page	415
Ending Page	419
Page Count	5
File Format	HTM / HTML PDF
ISSN	02679477
Volume Number	32
Issue Number	2
Journal	Journal of Analytical Atomic Spectrometry
DOI	10.1039/c6ja00282j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	Zn Zinc Isotope
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Analytical Chemistry

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