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dc.contributor.authorMilton, G. M.
dc.contributor.authorKramer, S. J.
dc.contributor.authorMilton, J. C. D.
dc.date.accessioned2021-02-11T20:44:36Z
dc.date.available2021-02-11T20:44:36Z
dc.date.issued1998-01-01
dc.identifier.citationMilton, G. M., Kramer, S. J., & Milton, J. C. D. (1998). Interlaboratory comparisons of 14C measurements in milk and vegetation. Radiocarbon, 40(1), 299-311.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S003382220001818X
dc.identifier.urihttp://hdl.handle.net/10150/653631
dc.descriptionFrom the 16th International Radiocarbon Conference held in Gronigen, Netherlands, June 16-20, 1997.
dc.description.abstractThe need for increased quality assurance for radiocarbon measurements performed by the monitoring laboratories at nuclear stations has spurred the introduction of a number of interlaboratory comparisons. We organized two such intercomparisons: the first set, circulated in 1994, consisted of two milk samples, one containing current global levels of 14C, the other containing an added spike of 14C-methylated casein. The second set, circulated in 1995, consisted of two samples of natural vegetation growing on the Chalk River Laboratories (CRL), containing two different levels of 14C, both well above global background. The response to our invitation to participate in these studies was very encouraging; six laboratories took part in the first intercomparison, eleven in the second. The list included both monitoring laboratories and those whose main function is 14C dating. Understandably, some of the latter preferred not to analyze the higher-activity samples. The results in 3 of the 4 data sets were consistent with a statistical distribution based on the reported errors. This report provides details of two intercomparisons, including the preparation of the samples, which may now be considered potential secondary reference materials, the range of analytical techniques in use at the participating laboratories, and a statistical analysis of the results returned to us.
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.subjectmilk
dc.subjecthistory
dc.subjectnuclear facilities
dc.subjectquality control
dc.subjectmonitoring
dc.subjectstatistical analysis
dc.subjectstandard materials
dc.subjectinterlaboratory comparison
dc.subjectvegetation
dc.subjectorganic compounds
dc.subjectsample preparation
dc.subjectC 14
dc.subjectcarbon
dc.subjectisotopes
dc.subjectradioactive isotopes
dc.titleInterlaboratory Comparisons of 14C Measurements in Milk and Vegetation
dc.typeProceedings
dc.typetext
dc.identifier.journalRadiocarbon
dc.description.noteThis material was digitized as part of a cooperative project between Radiocarbon and the University of Arizona Libraries.
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.volume40
dc.source.issue1
dc.source.beginpage299
dc.source.endpage311
refterms.dateFOA2021-02-11T20:44:36Z


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