Standardisation of a European measurement method for the determination of anions and cations in PM2.5: results of field trial campaign and determination of measurement uncertainty
| Autor: | Rosalía Fernández Patier, René Otjes, Ulla Makkonen, Caroline van Hoek, Jean-Philippe Putaud, Richard J. C. Brown, Maria Catrambone, Peter M. Harris, David M. Butterfield, Marc M.G. Houtzager, Sonya Beccaceci |
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| Rok vydání: | 2016 |
| Předmět: |
Detection limit
Measurement method 010401 analytical chemistry Public Health Environmental and Occupational Health Analytical chemistry General Medicine 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences Confidence interval 0104 chemical sciences Working range Field trial Forensic engineering Range (statistics) Environmental Chemistry Measurement uncertainty Environmental science Air quality index 0105 earth and related environmental sciences |
| Zdroj: | Environmental Science: Processes & Impacts. 18:1561-1571 |
| ISSN: | 2050-7895 2050-7887 |
| Popis: | European Committee for Standardisation (CEN) Technical Committee 264 ‘Air Quality’ has recently produced a standard method for the measurements of anions and cations in PM2.5 within its Working Group 34 in response to the requirements of European Directive 2008/50/EC. It is expected that this method will be used in future by all Member States making measurements of the ionic content of PM2.5. This paper details the results of a field measurement campaign and the statistical analysis performed to validate this method, assess its uncertainty and define its working range to provide clarity and confidence in the underpinning science for future users of the method. The statistical analysis showed that, except for the lowest range of concentrations, the expanded combined uncertainty is expected to be below 30% at the 95% confidence interval for all ions except Cl−. However, if the analysis is carried out on the lower concentrations found at rural sites the uncertainty can be in excess of 50% for Cl−, Na+, K+, Mg2+ and Ca2+. An estimation of the detection limit for all ions was also calculated and found to be 0.03 μg m−3 or below. |
| Databáze: | OpenAIRE |
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