Community Research and Development Information Service - CORDIS

Abstract

EU Directive 2003/17/EC lays down requirements for the sulphur content in automotive petrol and provides criteria for appropriate methods of analysis to monitor compliance with these requirements. The sulphur content of automotive petrol is currently between 10 and 50 mg*kg-1, and will be limited to 10 mg*kg-1 as of 2009. IMEP-22 studies whether the laboratories involved in petrol analysis in the frame of EU legislation are able to measure a sulphur content of 20.5 mg*kg-1. This value was certified by IRMM using a primary method of measurement. Most of the 128 participants were routine laboratories located in Europe, and the intercomparison is thought to be representative for this group. A satisfactory z score was obtained by 70% of the participants. These laboratories fulfilled the legislative requirements laid down in Directive 2003/17/EC. The unexpectedly large share of 30% questionable and unsatisfactory z scores indicates the presence of a discrepancy between the requirements of EU Directive 2003/17/EC and the performance of the average European routine laboratory. Eighty-seven per cent of the participants had followed the invitation to report an estimate of their measurement uncertainty. A zeta score was calculated for these results, and it was tested whether this uncertainty was within range. Half of the participants obtained satisfactory z and zeta scores, and 39% also obtained an additional satisfactory rating for the magnitude of the reported uncertainty. These laboratories fulfilled both legislative and metrological requirements. Several specific groups of laboratories participated in the frame of IRMM's support to EU policy. Customs laboratories were contacted via DG TAXUD and accredited laboratories were nominated by their accreditation bodies in the frame of the collaboration between IRMM and EA, the European Co-operation for Accreditation. In addition, laboratories from Acceding and Western Balkan countries participated in the frame [...]

Additional information

Authors: VAN DE KREEKE J, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel (BE);VAN NEVEL L, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel (BE);BYNENS S, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel (BE)
Bibliographic Reference: EUR 22774 EN (2007), 42 pp. Free of charge
Availability: http://bookshop.europa.eu/is-bin/INTERSHOP.enfinity/WFS/EU-Bookshop-Site/en_GB/-/EUR/ViewPublication-Start?PublicationKey=LANA22774 (Catalogue Number: LA-NA-22774-EN-C)
Record Number: 200719558 / Last updated on: 2007-10-29
Category: PUBLICATION
Original language: en
Available languages: en