How well do non-traditional stable isotope results compare between different laboratories: Results from the interlaboratory comparison of boron isotope measurements

Jugdeep Aggarwal, Florian Böhm, Gavin Foster, Stanislaw Halas, Bärbel Hönisch, Shao Yong Jiang, Jan Kosler, Amir Liba, Illia Rodushkin, Ted Sheehan, Jason Jiun-San Shen, Sonia Tonarini, Qianli Xie, Chen Feng You, Zhi Qi Zhao, Evelyn Zuleger

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

In order to address the correct reporting and therefore comparison of isotopic measurements across different instrument types and instrumental techniques a prepared set of synthetic standards was sent to 28 laboratories for boron (B) isotopic analyses. Standards were prepared from enriched and purified isotopic salts to avoid any sample preparation fractionation. The range in uncertainties of the analyses between different instrumental analytical techniques is as large as the differences within an instrumental analytical technique obscuring any systematic offset. We conclude that uncertainties in the measurement of δ11B values were often underestimated and a procedure is suggested to allow a better comparison of the different techniques. Two new standards (JABA and JABB) have been quantified and these are available to all laboratories for testing their analyses. The δ11B values of these new standards are 10.0‰ and -23.7‰. The results from this exercise impact on the way all isotope measurements are performed and reported. Guidelines are defined to aid the comparison of measurements between different laboratories.

Original languageEnglish
Pages (from-to)825-831
Number of pages7
JournalJournal of Analytical Atomic Spectrometry
Volume24
Issue number6
DOIs
Publication statusPublished - 2009

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Spectroscopy

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