EGU2020-17866, updated on 22 Aug 2022
https://doi.org/10.5194/egusphere-egu2020-17866
EGU General Assembly 2020
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

A thermal dissociation CAPS for detection of NOy species within the MetNO2 project

Annika Kuß1, Dagmar Kubistin1, Robert Holla1, Christian Plaß-Dülmer1, Erasmus Tensing1, Felix Utschneider1, Maximilian Prosteder1, David R. Worton2, Stefan Persijn3, Maitane Iturrate-Garcia4, and Robert Wegener5
Annika Kuß et al.
  • 1Deutscher Wetterdienst, Met. Observatory Hohenpeißenberg, Hohenpeißenberg, Germany
  • 2Chemical, Medical and Environmental Science Department, National Physical Laboratory, Teddington, United Kingdom
  • 3VSL Dutch Metrology Institute, Department of Chemistry, Viscosity, Pressure and Mass, Delft, Netherlands
  • 4Eidgenössisches Institut für Metrologie METAS, Labor Gasanalytik, Bern-Wabern, Switzerland
  • 5Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Jülich, Germany

As a toxic and reactive gas, nitrogen dioxide (NO2) influences air quality and health, the self-cleaning power of the atmosphere and photochemical smog formation. Reliable scientific data with high quality and comparability are required for national and international decision-makers. The quality of the NO2 measurements is crucially dependent on the quality of the calibration standards. In order to achieve the quality goals required, the MetNO2 project within the EMPIR (European Metrology Program for Innovation and Research) program aims to provide accurate and stable NO2 calibration standards for operational use at air quality stations.

To characterise the impurities of the newly developed standards a Thermal Dissociation - Cavity Attenuated Phase Shift (TD - CAPS) system has been set up, based on the design from Sadanaga et al. (2016). The device includes four heated channels for the differentiation of NO2, peroxy and alkyl nitrates and HNO3. In parallel, a gold converter coupled with a chemiluminescence detector was deployed for detection of the total sum of NOy. First results of the performance of the TD-CAPS used for impurity analysis of NO2 standards will be presented.

 

Reference: Sadanaga et al. Review of Scientific Instruments 87.7 (2016), 074102

How to cite: Kuß, A., Kubistin, D., Holla, R., Plaß-Dülmer, C., Tensing, E., Utschneider, F., Prosteder, M., Worton, D. R., Persijn, S., Iturrate-Garcia, M., and Wegener, R.: A thermal dissociation CAPS for detection of NOy species within the MetNO2 project, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-17866, https://doi.org/10.5194/egusphere-egu2020-17866, 2020.

This abstract will not be presented.