The first e-Sampling Proficiency Test in the area of food quality and safety

Ramsey, Mike, Robouch, P, Paepen, J and la Calle, B., de (2008) The first e-Sampling Proficiency Test in the area of food quality and safety. Technical Report. European Commission, Joint Research Centre, Institute for Reference Materials and Measurements.

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The Community Reference Laboratory for Heavy Metals in Feed and Food (CRL-HM) organised a course on "Uncertainty of Sampling" attended by National Reference Laboratories. After the introductory lecture by Prof. M. Ramsey the first electronic proficiency test on sampling (e-SPT), developed in the frame of the collaboration between the IRMM and the University of Sussex, was carried out. A total of 16 participants reported results. The purpose of the exercise was to monitor the "nitrate contamination in a lettuce field". The same nitrate concentration profile was used throughout the exercise. Participants were guided along the exercise; they collected two compound samples and reported their measurement results. The spreadsheet application accounted for sampling and analytical uncertainties, so that every participant provided four experimental results (two independent analytical measurements per composite sample). The reported results were analysed using the robust ANOVA program (ROBAN). Between participants, within-participant sampling, within-participant analytical and within-participant measurement uncertainties were evaluated. Although the results of a real sampling proficiency test estimate better the uncertainty from sampling,the e-SPT helps to learn how to design better real sampling proficiency tests.

Item Type: Reports and working papers (Technical Report)
Additional Information: JRC Technical Notes 47846 Peter Robouch was first author with whom I collaborated, and the other authors were from IRMM at took part in the experiment (Paepen J., de la Calle B., Robouch B.V)
Schools and Departments: School of Life Sciences > Evolution, Behaviour and Environment
Depositing User: Michael Ramsey
Date Deposited: 06 Feb 2012 21:22
Last Modified: 05 Jun 2013 08:11
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