Abstract
Along the years, several approaches for measurement uncertainty estimation have been suggested. Emphasis has been put on the general metrological interpretation of measurement uncertainty, but not on its different meanings when it is associated to given conditions of measurement where analytical work is performed and errors are originated. Three different definitions for uncertainty are proposed for reproducibility and intermediate precision conditions of measurement. These definitions inherit features from the VIM 3 definition of measurement uncertainty. It is argued that if a high performance laboratory keeps errors under control with proper validation and quality assurance programs, measurement uncertainty from intermediate precision condition of measurement is justified as a suitable estimation of its capability to attribute values to a measurand. Alternatively, a laboratory that does not keep errors under control should use uncertainty from reproducibility condition of measurement as the cost of its imperfections. Selection of information sources for measurement uncertainty estimation should be in harmony with its metrological meaning.
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References
ISO/IEC Guide 98-3 (2008) Uncertainty of measurement—part 3: guide to the expression of uncertainty in measurement (GUM:1995). ISO, Geneva, Switzerland
Eurachem, CITAC (2000) Quantifying uncertainty in analytical measurement, 2nd edn. Laboratory of the Government Chemist (LGC), London, UK
Analytical Methods Committee (1995) Analyst 120:2303–2308
Maroto A, Riu J, Boqué R, Rius FX (1999) Anal Chim Acta 391:173–185
Jülicher B, Gowik P, Uhlig S (1999) Analyst 124:537
Nordtest (2004) Handbook for the calculation of measurement uncertainty in environmental laboratories, 2nd edn. Available at http://www.nordtest.org. Accessed July 2009
ISO (2004) Guidance for the use of repeatability, reproducibility and trueness estimates in measurement uncertainty estimation, ISO/TS 21748:2004. ISO, Geneva, Switzerland
Eurolab (2007) Measurement uncertainty revisited: Alternative approaches to uncertainty evaluation. Technical report no. 1/2007, Germany. Available at http://www.eurolab.org. Accessed July 2009
Eurolab (2006) Guide to the evaluation of measurement uncertainty for quantitative test results. Technical report no. 1/2006, Germany. Available at http://www.eurolab.org. Accessed July 2009
da Silva RJNB, Santos JR, Camões MEGEC (2006) Accred Qual Assur 10:664–671
ISO 13528:2005 (2005) Statistical methods for use in proficiency testing by interlaboratory comparisons. ISO, Geneva, Switzerland
Norden (2002) Uncertainty—to a certain level. Available at http://www.nordicinnovation.net. Accessed July 2009
De Bièvre P (2008) Accred Qual Assur 13:61–62
Analytical Methods Committee (2003) AMC technical brief no. 15. Available at http://www.rsc.org/lap/rsccom/amc/amc_index.ht. Accessed July 2009
ISO/IEC Guide 99:2007 (2007) International vocabulary of metrology—basic and general concepts and associated terms (VIM), ISO, Geneva, Switzerland. Available at http://www.bipm.org/en/publications/guides/vim. Accessed July 2009
Thompson M (2000) Analyst 125:2020–2025
Hund E, Massart DL, Smeyers-Verbeke J (2001) Trends Anal Chem 20:394–406
Ostle B (1981) Estadística aplicada. Editorial Científico-Técnica, Ciudad de La Habana
ISO 21749:2005 (2005) Measurement uncertainty for metrological applications—repeated measurement and nested experiments, ISO, Geneva, Switzerland
ISO 5725:1994 (1994) Accuracy (trueness and precision) of measurements and results—parts 2, 3, and 4. ISO, Geneva, Switzerland
NF XP T 90-220:2003 (2003) Qualité de l’eau—Protocole d’estimation de l’incertitude de mesure associée à un résultat d’analyse pour les méthodes d’analyse physico-chimiques
Bich W (2009) Accred Qual Assur. doi: 10.1007/s00769-009-0500-4
Maroto A, Boqué R, Riu J, Rius FX (2001) Anal Chim Acta 446:133–145
Emons H (2006) Accred Qual Assur 10:690–691
Thompson M, Ellison SLR, Wood R (2006) IUPAC Pure Appl Chem 78:145–196
Belli M, Ellison SLR, Fajgelj A, Kuselman I, Sansone U, Wegscheider W (2007) Accred Qual Assur 12:391–398
ISO Guide 35:2006 (2006) Reference materials—general and statistical principles for certification. ISO, Geneva, Switzerland
Bich W (2006) Accred Qual Assur 11:638–639
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Alvarez-Prieto, M., Jiménez-Chacón, J. & Montero-Curbelo, Á. Do we need to consider metrological meanings of different measurement uncertainty estimations?. Accred Qual Assur 14, 623–634 (2009). https://doi.org/10.1007/s00769-009-0570-3
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DOI: https://doi.org/10.1007/s00769-009-0570-3