全部文献期刊会议图书|学者科研项目
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作者:... Céline Pascale , Bernhard Niederhauser , Markus Leuenberger
来源:[J].Atmospheric Measurement Techniques, 2020, Vol.13 (1), pp.101-117
摘要:Atmospheric trace gas measurements of greenhouse gases are critical in their precision and accuracy. In the past 5 years, atmospheric measurement and gas metrology communities have turned their attention to possible surface effects due to pressure and temperature variations ...
作者:... Céline Pascale , Bernhard Niederhauser , Markus Leuenberger
来源:[J].Atmospheric Measurement Techniques, 2020, Vol.13 (1), pp.119-130
摘要:A critical issue for the long-term monitoring of atmospheric trace gases is precision and accuracy of the measurement systems employed. Both measuring and preparing reference gas mixtures for trace gases are challenging due to, for example, adsorption and desorption of the s...
作者:Bernhard Niederhauser , Judit Fü ...
来源:[J].Metrologia(IF 1.902), 2017, Vol.54 (1A)
摘要:This key comparison aims to assess the core capabilities of the participants in gas analysis. Such competences include, among others, the capabilities to prepare Primary Standard gas Mixtures (PSMs), perform the necessary purity analysis on the materials used in the gas mixture p...
作者:... Janneke van Wijk , Klaus Wirtz , Bernhard Niederhauser
来源:[J].Measurement Science and Technology(IF 1.435), 2016, Vol.27 (11)
摘要: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 av...
作者:... Céline Pascale , Bernhard Niederhauser , Stefan Reimann
来源:[J].Atmospheric Measurement Techniques, 2018, Vol.11 (6), pp.3351-3372
摘要:For many years, the comparability of measurements obtained with variousinstruments within a global-scale air quality monitoring network has beenensured by anchoring all results to a unique suite of reference gas mixtures,also called a primary calibration scale . Such suites ...
作者:... Paul J. Brewer , Celine Pascale , Bernhard Niederhauser
来源:[J].Atmospheric Measurement Techniques, 2018, Vol.11 (12), pp.6429-6438
摘要:Monoterpenes play an important role in atmospheric chemistry dueto their large anthropogenic and biogenic emission sources and high chemicalreactivity. As a consequence, measurements are required to assess how changesin emissions of monoterpenes impact air quality. Accurate and c...
作者:... Stefan Persijn , Daiana Leuenberger , Bernhard Niederhauser
来源:[J].Applied Physics B(IF 1.782), 2018, Vol.124 (9), pp.1-8
摘要:Abstract(#br)The effect of moisture on the adsorption of ammonia was systematically studied using different surface materials and humidity levels. The experimental water amount fractions varied between 6 and 18,000 µmol mol −1 , and the ammonia amount fraction was 400 nmol m...
作者:... Philippe Moussay , Robert Wielgosz , Bernhard Niederhauser
来源:[J].Metrologia(IF 1.902), 2009, Vol.46 (1A), pp.08016
摘要:As part of the on-going key comparison BIPM.QM-K1, a comparison has been performed between the ozone national standard of the Swiss Federal Office of Metrology (METAS) and the common reference standard of the key comparison, maintained by the Bureau International des Poids et Mes...
作者:Bernhard Niederhauser , Manuela Quintilii ...
来源:[J].Metrologia(IF 1.902), 2010, Vol.47 (1A), pp.08023
摘要:Ammonia is an important compound in the chemical industry. It is widely used and is the basis for producing other compounds containing nitrogen. Ammonia is also very hazardous, and consequently emissions of ammonia need be controlled and monitored. In the past years, several...
作者:Bernhard Niederhauser , Judit Fükö ...
来源:[J].Metrologia(IF 1.902), 2013, Vol.50 (1A)
摘要:This supplementary comparison is designed to test the capabilities of the participants to measure and certify carbon dioxide in nitrogen, and to provide supporting evidence for the CMCs of institutes for carbon dioxide. Indeed this comparison aims to demonstrate the capabili...

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