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Philippe QUEVAUVILLER: Executive at the European Commission - Environment Department - Associate Professor
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Olivier DONARD: CNRS Research Director, Bioinorganic Analytical Chemistry and Environment Laboratory
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Olivier THOMAS: ProfessorObservatoire de l'environnement et du développement durable Université de Sherbrooke (Canada)
INTRODUCTION
Traceability is now considered one of the cornerstones of chemical measurement science. While this concept is increasingly used in a wide variety of sectors, it is still subject to confusion with more "classical" metrological terms such as, for example, accuracy, precision, etc. Traceability implies that measurement data are linked to established references, through an unbroken chain of comparisons. Traceability implies that measurement data are linked to established references, through an unbroken chain of comparisons, each with a defined uncertainty. This article discusses the various elements that make up this chain of connection to references (units, standards, etc.) and hence measurement traceability in the context of environmental chemical analysis.
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