New guidelines for δ13C measurements
January 1, 2006
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%.
Citation Information
| Publication Year | 2006 |
|---|---|
| Title | New guidelines for δ13C measurements |
| DOI | 10.1021/ac052027c |
| Authors | Tyler B. Coplen, Willi A. Brand, Matthias Gehre, Manfred Groning, Harro A. J. Meijer, Blaza Toman, R. Michael Verkouteren |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Analytical Chemistry |
| Index ID | 70030633 |
| Record Source | USGS Publications Warehouse |