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HomeFirst EC-JRC aromatic (BTEX) compounds intercomparison with automatic analysers
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The first BTEX (benzene, toluene, ethyl-benzene and xylenes) intercomparison was intended to provide information on the major sources of uncertainty for the measurement of BTEX with automatic analysers that are used in networks throughout Europe. The quality assurance of ambient air pollutant measurements is essential for the assessment of air quality through legislative monitoring. To ensure that measurements are of the highest quality the European Commission has supported the development and publication of reference methods that have been standardized through CEN. Intercomparison exercises are an integral part of harmonisation activities. Since benzene is a regulated pollutant, Directive 200/69/EEC, the exercise was designed to show the overall quality of these measurements at the participating national reference laboratories. Twelve laboratories participated in the intercomparison. The instrumentation represented commercially available analysers. One third of the analysers were equipped with flame ionization detectors, while the remainder used photo ionization detectors. The latter types are favoured as they do not require the use of hydrogen in the detection system. Each analyzer was evaluated through a five day exercise that included assessments of linearity, memory effects, humidity effects, ozone effects and VOC interference effects.
- Published:
- Corporate author(s): Institute for Environment and Sustainability (Joint Research Centre)
- Personal author(s): Pérez Ballesta, P ; Field, R. A ; Connolly, R
- Themes: Environmental research
- Subject: atmospheric pollutant , chemical product , drafting of EU law , European Committee for Standardisation , European standard , metrology , research and development
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| ISSN 1018-5593 | ISBN 92-79-03671-8 | DOI 10.2788/32830 | Catalogue number LB-NA-22523-EN-C |
- Released on EU publications website:
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