Title: Evaluation of the Inter-Laboratory Comparison exercise for SO2, CO, O3, NO and NO2 (13-16 May 2019, Ispra)
Publisher: Publications Office of the European Union
Publication Year: 2019
JRC N°: JRC118182
ISBN: 978-92-76-12334-7 (online)
ISSN: 1831-9424 (online)
Other Identifiers: EUR 29898 EN
OP KJ-NA-29898-EN-N (online)
URI: https://publications.jrc.ec.europa.eu/repository/handle/JRC118182
DOI: 10.2760/659833
Type: EUR - Scientific and Technical Research Reports
Abstract: Within the harmonisation programme of Air Quality monitoring in Europe the European Reference Laboratory of Air Pollution (ERLAP) organises Inter-Laboratory Comparison exercises (ILC). From the 13th to the 16th of May 2019, including ERLAP, ten Laboratories of AQUILA (Network of European Air Quality Reference Laboratories) met for a laboratory comparison exercise in Ispra (IT) to evaluate their proficiency in the analysis of inorganic gaseous air pollutants (NO, NO2, SO2, CO and O3) covered by the European Air Quality Directive 2008/50 EC [1] and its recent amendments 2015/1480/EC [42]. One laboratory reported only values for NOx and O3. The proficiency evaluation, where each participant’s bias was compared to two criteria, provides information on the current situation and capabilities to the European Commission and can be used by participants in their quality control system. On the basis of adopted criteria (z’-score), 86% of all results reported by AQUILA laboratories were satisfactory both in terms of measured values and reported uncertainties. The rest of the results had satisfactory measured values, but the reported uncertainties were either too high (8%) or too small (4%). The rest of the results consist in four values (2%) found to be questionable always for z’-score. During this ILC no unsatisfactory results were identified. Comparability of results among AQUILA participants at the highest generated concentration levels is satisfactory for measurements of all pollutants.
JRC Directorate:Energy, Transport and Climate

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