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Isotope effect in the formation of H2 from H2CO studied at the atmospheric simulation chamber SAPHIR
Isotope effect the formation of H2 from H2CO the atmospheric simulation chamber SAPHIR
2010/8/13
Formaldehyde of known, near-natural isotopic composition was photolyzed in the SAPHIR atmosphere simulation chamber under ambient conditions. The isotopic composition of the product H2 was used to det...
Characterisation of the photolytic HONO-source in the atmosphere simulation chamber SAPHIR
photolytic HONO-source atmosphere simulation chamber SAPHIR
2009/2/16
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 w...
Actinometric measurements of NO2 photolysis frequencies in the atmosphere simulation chamber SAPHIR
Actinometric measurements NO2 photolysis frequencies atmosphere simulation chamber SAPHIR
2009/2/6
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 ra...
Investigation of the formaldehyde differential absorption cross section at high and low spectral resolution in the simulation chamber SAPHIR
formaldehyde spectral resolution SAPHIR
2008/11/12
The results from a simulation chamber study on the formaldehyde (HCHO) absorption cross section in the UV spectral region are presented. We performed 4 experiments at ambient HCHO concentrations with ...
Technical Note: Intercomparison of formaldehyde measurements at the atmosphere simulation chamber SAPHIR
formaldehyde atmosphere simulation SAPHIR
2008/11/5
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) ...