Aleš Fajgelj is an analytical chemistry researcher whose work includes metrological traceability, recovery information and laboratory quality assurance. The 2011 IUPAC traceability report identifies his affiliation with the International Atomic Energy Agency's Department of Nuclear Sciences and Applications.[ref]
Metrological traceability of measurement results in chemistry: Concepts and implementation by Paul De Bièvre and others. Publisher byline and affiliation 3.
With Paul De Bièvre, René Dybkær and D. Brynn Hibbert, Aleš Fajgelj prepared recommendations intended to give chemical measurement a consistent account of the creation, meaning and role of metrological traceability. He also coauthored the 1999 recovery-information report, connecting the interpretation of laboratory results with the handling of losses during preparation.[ref]
Metrological traceability of measurement results in chemistry: Concepts and implementation by Paul De Bièvre and others. Abstract.
[ref]An original example illustrates the distinction between documenting a reference and validating a process. Suppose a standard solution's assigned concentration is connected to a specified reference through documented measurements. If an unknown loses 20% of its analyte during preparation while the standards do not, that documented standard alone does not justify treating the unknown's preparation loss as zero. The measurement model must represent the relevant stages and their measurement uncertainty.
Likewise, agreement in an interlaboratory comparison supplies evidence about the compared results, but does not by itself write the missing chain of reference relationships. The value of Aleš Fajgelj's standards work lies in making those distinctions explicit enough for laboratories to communicate what a result means.
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