A metrological approach to improve accuracy and reliability of ammonia measurements in ambient air
| Autor: | Daiana Leuenberger, Andrea Pogány, Nicholas A. Martin, Bernhard Niederhauser, Valerio Ferracci, Volker Ebert, Carlo Tiebe, David Balslev-Harder, Janneke van Wijk, Marsailidh Twigg, Klaus Wirtz, Stefan Persijn, Christine F. Braban, Olavi Vaittinen, Tuomas Hieta, Nathan Cassidy, Céline Pascale, Jari Peltola |
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| Přispěvatelé: | Ferracci, Valerio [0000-0001-6647-993X], Apollo - University of Cambridge Repository |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
validation and testing infrastructure
010504 meteorology & atmospheric sciences Metrological traceability optical transfer standard Nanotechnology 01 natural sciences 010309 optics ammonia in ambient air reference gas standards Range (aeronautics) 0103 physical sciences Calibration Process engineering Instrumentation Engineering (miscellaneous) Reliability (statistics) 0105 earth and related environmental sciences business.industry Applied Mathematics Ambient air Metrology traceability Measuring instrument Environmental science business Quality assurance |
| Zdroj: | Pogány, A, Balslev-Harder, D, Braban, C F, Cassidy, N, Ebert, V, Ferracci, V, Hieta, T, Leuenberger, D, Martin, N A, Pascale, C, Peltola, J, Persijn, S, Tiebe, C, Twigg, M M, Vaittinen, O, Van Wijk, J, Wirtz, K & Niederhauser, B 2016, ' A metrological approach to improve accuracy and reliability of ammonia measurements in ambient air ', Measurement Science and Technology, vol. 27, no. 11, 115012 . https://doi.org/10.1088/0957-0233/27/11/115012 |
| DOI: | 10.17863/cam.6401 |
| Popis: | The environmental impacts of ammonia (NH3) in ambient air have become more evident in the recent decades, leading to intensifying research in this field. A number of novel analytical techniques and monitoring instruments have been developed, and the quality and availability of reference gas mixtures used for the calibration of measuring instruments has also increased significantly. However, recent inter-comparison measurements show significant discrepancies, indicating that the majority of the newly developed devices and reference materials require further thorough validation. There is a clear need for more intensive metrological research focusing on quality assurance, intercomparability and validations. MetNH3 (Metrology for ammonia in ambient air) is a three-year project within the framework of the European Metrology Research Programme (EMRP), which aims to bring metrological traceability to ambient ammonia measurements in the 0.5-500 nmol mol-1 amount fraction range. This is addressed by working in three areas: (1) improving accuracy and stability of static and dynamic reference gas mixtures, (2) developing an optical transfer standard and (3) establishing the link between high-accuracy metrological standards and field measurements. In this article we describe the concept, aims and first results of the project. |
| Databáze: | OpenAIRE |
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