New guidelines for δ13C measurements

Analytical Chemistry
By: , and 



Consistency of δ13C measurements can be improved 39−47% by anchoring the δ13C scale with two isotopic reference materials differing substantially in 13C/12C. It is recommended thatδ13C values of both organic and inorganic materials be measured and expressed relative to VPDB (Vienna Peedee belemnite) on a scale normalized by assigning consensus values of −46.6‰ to L-SVEC lithium carbonate and +1.95‰ to NBS 19 calcium carbonate. Uncertainties of other reference material values on this scale are improved by factors up to two or more, and the values of some have been notably shifted:  the δ13C of NBS 22 oil is −30.03%.

Publication type Article
Publication Subtype Journal Article
Title New guidelines for δ13C measurements
Series title Analytical Chemistry
DOI 10.1021/ac052027c
Volume 78
Issue 7
Year Published 2006
Language English
Publisher ACS Publications
Description 3 p.
First page 2439
Last page 2441
Online Only (Y/N) N
Additional Online Files (Y/N) N
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