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Value assignment and uncertainty evaluation for single-element reference solutions
NIST, Gaithersburg, USA..
Mälardalen University, School of Education, Culture and Communication, Educational Sciences and Mathematics. Phys Tech Bundesanstalt, Berlin, Germany; NIST, Gaithersburg, USA.. (MAM)
NIST, Gaithersburg, USA..
NIST, Gaithersburg, USA..
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2018 (English)In: Metrologia, ISSN 0026-1394, E-ISSN 1681-7575, Vol. 55, no 3, p. 404-413Article in journal (Refereed) Published
Abstract [en]

A Bayesian statistical procedure is proposed for value assignment and uncertainty evaluation for the mass fraction of the elemental analytes in single-element solutions distributed as NIST standard reference materials. The principal novelty that we describe is the use of information about relative differences observed historically between the measured values obtained via gravimetry and via high-performance inductively coupled plasma optical emission spectrometry, to quantify the uncertainty component attributable to between-method differences. This information is encapsulated in a prior probability distribution for the between-method uncertainty component, and it is then used, together with the information provided by current measurement data, to produce a probability distribution for the value of the measurand from which an estimate and evaluation of uncertainty are extracted using established statistical procedures.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2018. Vol. 55, no 3, p. 404-413
National Category
Mathematics Probability Theory and Statistics
Research subject
Mathematics/Applied Mathematics
Identifiers
URN: urn:nbn:se:mdh:diva-39295DOI: 10.1088/1681-7575/aabd57ISI: 000431827100002Scopus ID: 2-s2.0-85048238027OAI: oai:DiVA.org:mdh-39295DiVA, id: diva2:1209846
Available from: 2018-05-24 Created: 2018-05-24 Last updated: 2018-06-22Bibliographically approved

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