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Abstract

The programme is co-ordinated by the Institute for Reference Materials and Measurements (IRMM) and is run under the auspices of IUP AC, EURACHEM, EUROMET, CIT AC and EA. The certified test samples with undisclosed values are sent to interested laboratories. The participating laboratories are asked to return their measurement result with a statement of uncertainty. By displaying, in pictures, the results from the participants against the IMEP SI- traceable reference values, IMEP demonstrates the State of Practise (SoP) of chemical amount measurements in various fields. An example is given for IMEP-14, Trace Elements in Sediments.

IMEP has different objectives, on purpose, than traditional round robin studies or proficiency testing schemes. The values, which will serve as references, are obtained by means of well understood measurement processes. These reference values are not derived from and therefore do not depend on the participant measurement results. The IMEP reference values are established mainly by Isotope Dilution Mass Spectrometry (IDMS) applied as a primary method of measurement (PMM, CCQM definition). The IMEP reference laboratories are selected specifically for each IMEP round depending on the material, matrix and elements under investigation. All IMEP reference laboratories have shown in previous work their capability, e.g. by publications in renowned international scientific journals. .

Additional information

Authors: VINTHER NOERGAARD J, EC-JRC, Institute for Reference Materials and Measurements, Gel (BE);VAN NEVEL L, EC-JRC, Institute for Reference Materials and Measurements, Gel (BE);AREGBE Y, EC-JRC, Institute for Reference Materials and Measurements, Gel (BE);PAPADAKIS I, EC-JRC, Institute for Reference Materials and Measurements, Gel (BE);TAYLOR P.D.P, EC-JRC, Institute for Reference Materials and Measurements, Gel (BE)
Bibliographic Reference: An article published in: VAM Bulletin, (2001) vol.24, pp.26-27
Record Number: 200013605 / Last updated on: 2001-07-30
Category: PUBLICATION
Original language: en
Available languages: en