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Publikationstyp
Wissenschaftlicher Artikel
Erscheinungsjahr
2016
A metrological approach to improve accuracy and reliability of ammonia measurements in ambient air
A metrological approach to improve accuracy and reliability of ammonia measurements in ambient air
Herausgeber
Quelle
Measurement science and technology
27 (2016), Heft 11
27 (2016), Heft 11
Schlagwörter
Umweltauswirkung, Qualitätssicherung, Referenzmaterial
Zitation
POGÁNY, Andrea, David BALSLEV-HARDER, Christine F. BRABAN, Nathan CASSIDY, Volker EBERT, Valerio FERRACCI, Tuomas HIETA, Daiana LEUENBERGER, Nicholas, A. MARTIN, Céline PASCALE, Jari PELTOLA, Stefan PERSIJN, Carlo TIEBE, Marsailidh M. TWIGG, Olavi VAITTINEN, Janneke VAN WIJK, Bernhard NIEDERHAUSER und Klaus WIRTZ, 2016. A metrological approach to improve accuracy and reliability of ammonia measurements in ambient air. Measurement science and technology [online]. 2016. Bd. 27 (2016), Heft 11. DOI 10.60810/openumwelt-351. Verfügbar unter: https://openumwelt.de/handle/123456789/7346
Zusammenfassung englisch
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-1amount 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.Quelle: http://iopscience.iop.org