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dc.contributor.authorXu, Xiaomei
dc.contributor.authorKhosh, Matthew S.
dc.contributor.authorDruffel-Rodriguez, Kevin C.
dc.contributor.authorTrumbore, Susan E.
dc.contributor.authorSouthon, John R.
dc.date.accessioned2021-02-11T21:22:57Z
dc.date.available2021-02-11T21:22:57Z
dc.date.issued2010-01-01
dc.identifier.citationXu, X., Khosh, M. S., Druffel-Rodriguez, K. C., Trumbore, S. E., & Southon, J. R. (2010). Is the consensus value of ANU sucrose (IAEA C-6) too high?. Radiocarbon, 52(3), 866-874.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S0033822200045951
dc.identifier.urihttp://hdl.handle.net/10150/654251
dc.descriptionFrom the 20th International Radiocarbon Conference held in Kona, Hawaii, USA, May 31-June 3, 2009.
dc.description.abstractPrimary and secondary standards are essential in radiocarbon analyses for the purpose of reporting and comparing data among laboratories, as well as for internal laboratory data quality control. ANU sucrose is one of the IAEA-certified 14C standards (C-6) with a consensus value of 1.5061 +/- 0.0011 fraction modern (Fm). All of our measurements of ANU sucrose (n = 351) as a secondary standard over the last 7 yr result in an average value of 1.5016 +/- 0.0005 Fm (2- standard error). After applying the same outlier tests used for IAEA reference standards, a weighted average value of 1.5016 +/- 0.0002 Fm (n = 294) was calculated. This value is significantly lower than the IAEA C-6 consensus value (t test with unequal variance; p = 0.023). In contrast, our measurements of other secondary standards over the same time period are in excellent agreement with their respective consensus values. Since ANU is the only secondary standard measured in our lab that does not agree with the consensus values, and we have measured a larger number analyses compared to what went into the definition of the consensus value, we suggest that the consensus value of ANU sucrose might be too high by ~0.0045 +/- 0.0011 Fm. Given that some labs routinely use ANU sucrose as a primary standard, our results suggest that revisiting the consensus value of ANU sucrose may be necessary.
dc.language.isoen
dc.publisherDepartment of Geosciences, The University of Arizona
dc.relation.urlhttp://radiocarbon.webhost.uits.arizona.edu/
dc.rightsCopyright © by the Arizona Board of Regents on behalf of the University of Arizona. All rights reserved.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.titleIs the Consensus Value of ANU Sucrose (IAEA C-6) Too High?
dc.typeProceedings
dc.typetext
dc.identifier.journalRadiocarbon
dc.description.collectioninformationThe Radiocarbon archives are made available by Radiocarbon and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform February 2021
dc.source.volume52
dc.source.issue3
dc.source.beginpage866
dc.source.endpage874
refterms.dateFOA2021-02-11T21:22:57Z


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