The interlaboratory comparison IMEP-19 trace elements in rice-a new approach for measurement performance evaluation
The aim of IMEP is to present objectively the quality of chemical measurements. Participants in IMEP compare their reported measurement results with independent external certified reference values with demonstrated traceability and uncertainty, as evaluated according to international guidelines. IME...
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| Veröffentlicht in: | Accreditation and quality assurance 2004-06, Vol.9 (6), p.323-332 |
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| creator | AREGBE, Yetunde HARPER, Caroline NØRGAARD, Jørgen DE SMET, Machteld SMEYERS, Peggy VAN NEVEL, Lutgart TAYLOR, Philip D. P |
| description | The aim of IMEP is to present objectively the quality of chemical measurements. Participants in IMEP compare their reported measurement results with independent external certified reference values with demonstrated traceability and uncertainty, as evaluated according to international guidelines. IMEP-19 focused on measurements of trace elements in rice aiming to support the Commission Regulation (EC) No. 466/2001 on maximum levels for certain contaminants in foodstuff. Measurement results for the elements Cd, Cu, Pb and Zn were reported by 267 field laboratories involved in food analysis from 43 countries. Performance criteria for the evaluation of the reported measurement results in IMEP-19 are suggested. The chosen performance indicators not only take into account the deviation of the reported measurement value from the certified reference value, but also set criteria for maximum and minimum acceptable uncertainty. The IMEP-19 participants' performance is reviewed by means of using new simple graphical tools, called "Naji plots". |
| doi_str_mv | 10.1007/s00769-003-0693-x |
| format | Article |
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| subjects | Accreditation Analytical chemistry Cadmium Chemistry Consumer protection Contaminants Copper Criteria Exact sciences and technology Food safety Laboratories Performance evaluation Public health Rice Trace elements Uncertainty |
| title | The interlaboratory comparison IMEP-19 trace elements in rice-a new approach for measurement performance evaluation |
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