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Lessons learned from inter-laboratory studies of carbon isotope analysis of honey

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dc.contributor.authorDUNN, Philip J. H.
dc.contributor.authorHILL, Sarah
dc.contributor.authorCOWEN, Simon
dc.contributor.authorGOENAGA-INFANTE, Heidi
dc.contributor.authorSARGENT, Mike
dc.contributor.authorGoren, AHMET CEYHAN
dc.contributor.authorBILSEL, Mine
dc.contributor.authorSIMSEK, Adnan
dc.contributor.authorOGRINC, Nives
dc.contributor.authorPOTOCNIK, Doris
dc.contributor.authorARMISHAW, Paul
dc.contributor.authorHAI, LU
dc.contributor.authorKONOPELKO, Leonid
dc.contributor.authorCHUBCHENKO, Yan
dc.contributor.authorCHESSON, Lesley A.
dc.contributor.authorVAN DER PEIJL, Gerard
dc.contributor.authorBLAGA, Cornelia
dc.contributor.authorPOSEY, Robert
dc.contributor.authorCAMIN, Federica
dc.contributor.authorCHERNYSHEV, Anatoly
dc.contributor.authorCHOWDHURY, Sadia A.
dc.contributor.institutionauthorGÖREN, AHMET CEYHAN
dc.date.accessioned2019-10-05T21:33:17Z
dc.date.available2019-10-05T21:33:17Z
dc.date.issued2019-01-01
dc.description.abstractForensic application of carbon isotope ratio measurements of honey and honey protein to investigate the degree of adulteration with high fructose corn syrup or other C-4 plant sugars is well established. These measurements must use methods that exhibit suitable performance criteria, particularly with regard to measurement uncertainty and traceability - low levels of adulteration can only be detected by methods that result in suitably small measurement uncertainties such that differences of 1960 or less can be reliably detected. Inter-laboratory exercises are invaluable to assess the state-of-the art of measurement capabilities of laboratories necessary to achieve such performance criteria. National and designated metrology institutes from a number of countries recently participated in an inter-laboratory assessment (CCQM-K140) of stable carbon isotope ratio determination of bulk honey. The same sample material was distributed to a number of forensic isotope analysis laboratories that could not participate directly in the metrological comparison. The results from these studies have demonstrated that the majority of participants provided isotope delta values with acceptable performance metrics; that all participants ensured traceability of their results; and that where measurement uncertainties were reported; these were fit-for-purpose. A number of the forensic laboratories only reported precision rather than full estimates of measurement uncertainty and this was the major cause of the few instances of questionable performance metrics. Reporting of standard deviations in place of measurement uncertainties is common practice outside metrology institutes and the implications for interpretations of small differences in isotopic compositions are discussed. The results have also highlighted a number of considerations that are useful for organisers of similar inter-laboratory studies in the future.
dc.identifier.citationDUNN P. J. H. , HILL S., COWEN S., GOENAGA-INFANTE H., SARGENT M., Goren A. C. , BILSEL M., SIMSEK A., OGRINC N., POTOCNIK D., et al., -Lessons learned from inter-laboratory studies of carbon isotope analysis of honey-, SCIENCE & JUSTICE, cilt.59, ss.9-19, 2019
dc.identifier.doi10.1016/j.scijus.2018.08.003
dc.identifier.scopus85052111908
dc.identifier.urihttps://hdl.handle.net/20.500.12645/7597
dc.identifier.wosWOS:000457658000002
dc.language.isoen
dc.titleLessons learned from inter-laboratory studies of carbon isotope analysis of honey
dc.typeArticle
dspace.entity.typePublication
local.article.journalnameTÜRK ÜROLOJİ DERGİSİ
local.avesis.idbccf7479-a72b-426d-bcbd-a516cfc8a9be
local.avesis.response7473
local.publication.isinternational1
relation.isAuthorOfPublication07fcea81-8515-4cd4-86f2-047fe6b2df71
relation.isAuthorOfPublication.latestForDiscovery07fcea81-8515-4cd4-86f2-047fe6b2df71
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