Evaluating uncertainty in routine analysis |
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| Affiliation: | 1. LHSV, Ecole des Ponts, CEREMA, EDF R et D, UPE, Chatou, France;2. RPS Group, Seattle, WA, USA;1. Department of Breast and Endocrine Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita-shi, Osaka 565-0871, Japan;2. Department of Surgery, Osaka Police Hospital, 10-31 Kitayamacho, Tennouji-ku, Osaka-shi, Osaka 543-0035, Japan;3. Department of Pathology, Osaka Police Hospital, 10-31 Kitayamacho, Tennouji-ku, Osaka-shi, Osaka 543-0035, Japan;4. Department of Breast and Endocrine Surgery, Osaka Medical Center for Cancer and Cardiovascular Diseases, 3-3 Nakamichi 1-Chome, Higashinari-ku, Osaka-shi, Osaka 537-8511, Japan;1. DEQAS Advisory Panel, Charing Cross Hospital, London W6 8RF, United Kingdom;2. Imperial College Healthcare NHS Trust, Charing Cross Hospital, London W6 8RF, United Kingdom;1. Université Paris-Est, Laboratoire d’Analyse et de Mathématiques Appliquées (UMR 8050), CNRS, UPEMLV, UPEC, F-77454, Marne-la-Vallée, France;2. Université Paris-Est, Laboratoire d’hydraulique Saint-Venant, Ecole des Ponts ParisTech–EDF R&D–CEREMA, 6 quai Watier, 78401 Chatou Cedex, France;3. MATHERIALS, INRIA Rocquencourt, France;1. Duy Tan University, Institute of Research and Development, K7/25 Quang Trung, Da Nang, Vietnam;2. Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 Boulevard Descartes, 77454 Marne-la-Vallée Cedex 2, France;3. Euro-Engineering, Rue Jules Ferry, 64053 Pau, France |
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| Abstract: | In this article, we critically describe the different approaches proposed so far for calculating uncertainty in chemical measurements: (1) the ISO approach, adapted for the analytical field by EURACHEM (commonly known as `bottom-up'), and (2) the Analytical Methods Committee approach (commonly known as `top-down'), based on interlaboratory information. We also propose a new procedure, which is totally consistent with the ISO approach in the sense that all the sources of error are identified, quantified and combined, but which is conceptually more similar to the `top-down' approach because of its holistic character. This new procedure estimates uncertainty from the information generated during the process of assessing accuracy. |
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