Ratios for light-element isotopes standardized for better interlaboratory comparison
Article first published online: 3 JUN 2011
©1996. American Geophysical Union. All Rights Reserved.
Eos, Transactions American Geophysical Union
Volume 77, Issue 27, page 255, 2 July 1996
How to Cite
1996), Ratios for light-element isotopes standardized for better interlaboratory comparison, Eos Trans. AGU, 77(27), 255–255, doi:10.1029/96EO00182., , , , , and (
- Issue published online: 3 JUN 2011
- Article first published online: 3 JUN 2011
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Stable isotope-ratio measurements of the light elements have been used in increasingly important ways to understand processes in geochemistry, hydrology, oceanography, atmospheric sciences, environmental studies, and many other fields. Progress in these fields requires better precision and reproducibility of stable isotope-ratio measurements. Some laboratories are claiming accuracies of 0.02‰; or better for δ13C and δ180. However, δ13C and δ180 analyses of the same sample by different laboratories can differ by more than 0.3‰. Recognizing that isotopic analyses of the same homogeneous material reported from different credible laboratories should yield the same isotopic composition within the uncertainty of the measurements, the International Atomic Energy Agency (IAEA) held an Advisory Group Meeting on stable isotope reference and intercomparison materials for light elements in Vienna from December 11 to 14, 1995.