International Measurement Evaluation Programme: IMEP-9, Trace Elements in Water
The International Measurement Evaluation Programme (IMEP) is an inter-laboratory comparison scheme, which is founded owned and coordinated by the Institute for Reference Materials and Measurements (IRMM) since 1988. IMEP-9 is the third round of trace elements in water following IMEP-3 and IMEP-6. Reference values for 15 elements stating total concentrations and combined uncertainties (according to GUM) were established. The reference values were established mainly by Isotope Dilution Mass Spectrometry (IDMS) as a primary method of measurement, and values traceable to the SI were obtained. The four elements that could not be certified by IDMS were assigned values by means of other measurement techniques. Results from 201 laboratories from 35 countries and 4 continents were evaluated against the reference values and the comparability between the laboratories is presented graphically.
Bibliographic Reference: An article published in: The Analyst (2001) 126. Pp 228-233
Availability: An article published in: The Analyst (2001) 126. Pp 228-233
Record Number: 200013365 / Last updated on: 2001-06-27
Original language: en
Available languages: en