Inter-Calibration of a Proposed New Primary Reference Standard AA-ETH Zn for Zinc Isotopic Analysis
Digital Object Identifier (DOI)
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.
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Citation / Publisher Attribution
Journal of Analytical Atomic Spectrometry, v. 32, issue 2, p. 415-419
Scholar Commons Citation
Archer, Corey; Anderson, Morten B.; Cloquet, Christophe; Conway, Tim M.; Dong, Shoufei; Ellwood, Michael; Moore, Rebekah; Nelson, Joey; and Rehkamper, Mark, "Inter-Calibration of a Proposed New Primary Reference Standard AA-ETH Zn for Zinc Isotopic Analysis" (2017). School of Geosciences Faculty and Staff Publications. 1500.
Complete list of authors: Olivier Rouxel, Moneesha Samanta, Ki-Cheol Shin, Yoshiki Sohrin, Shotaro Takano and Laura Wasylenki