Characterisation of the photolytic HONO-source in the atmosphere simulation chamber SAPHIR
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منابع مشابه
Characterisation of the photolytic HONO-source in the atmosphere simulation chamber SAPHIR
HONO formation has been proposed as an important OH radical source in simulation chambers for more than two decades. Besides the heterogeneous HONO formation by the dark reaction of NO2 and adsorbed water, a photolytic source has been proposed to explain the elevated reactivity in simulation chamber experiments. However, the mechanism of the photolytic process is not well understood so far. As ...
متن کاملCharacterisation of the photolytic HONO-source
Characterisation of the photolytic HONO-source in the atmosphere simulation chamber SAPHIR F. Rohrer, B. Bohn, T. Brauers, D. Brüning, F.-J. Johnen, A. Wahner, and J. Kleffmann Institut für Chemie und Dynamik der Geosphäre II: Troposphäre, Forschungszentrum Jülich, Jülich, Germany Physikalische Chemie/FB C, Bergische Universität Wuppertal, Wuppertal, Germany Received: 11 August 2004 – Accepted:...
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The simulation chamber SAPHIR at Forschungszentrum Jülich has UV permeable teflon walls facilitating atmospheric photochemistry studies under the influence of natural sunlight. Because the internal radiation field is strongly affected by construction elements, we use external, radiometric measurements of spectral actinic flux and a model to calculate mean photolysis frequencies for the chamber ...
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The atmosphere simulation chamber SAPHIR at the Research Centre Jülich was used to test the suitability of state-of-the-art analytical instruments for the measurement of gas-phase formaldehyde (HCHO) in air. Five analyzers based on four different sensing principles were deployed: a differential optical absorption spectrometer (DOAS), cartridges for 2,4-dinitrophenylhydrazine (DNPH) derivatizati...
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ژورنال
عنوان ژورنال: Atmospheric Chemistry and Physics
سال: 2005
ISSN: 1680-7324
DOI: 10.5194/acp-5-2189-2005