Objective To develop an instrument based on laser induced fluorescence (LIF) for highly sensitive measurements of OH/HO2 radical concentration-time profiles in the simulation chamber The instrument to be developed will be used to analyze different chemical systems with variable VOC/NOx ratios relevant to the regional and global troposphere. A major advantage of using the instrument in combination with the simulation chamber facility is that the oxidation capacity of the troposphere can be tested for different boundary conditions without the complication of meteorology. The method will provide, for the first time, a direct observation of the OH concentration-time profiles together with the oxidation rates of VOC species for simple systems and allow an assessment of the influence of the addition of other species on the OH radical chain to be tested. It is also intended to investigate the influence of aerosol particles on the radical chain. It is expected that the methodology developed within the proposed project can be used to analyze the chemical mechanisms also of complex reaction systems and that representative reduced mechanisms can be derived from the experimental analysis of the OH radical chain. The project will also provide a facility by which other instruments used for ambient radical measurements can be tested and calibrated under atmospheric conditions. Fields of science natural scienceschemical scienceselectrochemistryelectrolysisnatural sciencesearth and related environmental sciencesatmospheric sciencesmeteorologytropospherenatural sciencesphysical sciencesopticslaser physics Programme(s) FP4-ENV 2C - Specific programme of research and technological development in the field of environment and climate, 1994-1998 Topic(s) 020101 - Troposphere Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator BERGISCHE UNIVERSITAET GESAMTHOCHSCHULE WUPPERTAL EU contribution No data Address Gauss-Straße 20 42097 WUPPERTAL Germany See on map Total cost No data Participants (4) Sort alphabetically Sort by EU Contribution Expand all Collapse all Consejo Superior de Investigaciones Científicas Spain EU contribution No data Address 119/123,Serrano 28071 Madrid See on map Total cost No data Forschungszentrum Jülich GmbH Germany EU contribution No data Address Wilhelm-Johnen-Straße 52425 Jülich See on map Total cost No data RUPRECHT-KARLS-UNIVERSITAET HEIDELBERG Germany EU contribution No data Address Im Neuenheimer Feld 229 69117 HEIDELBERG See on map Total cost No data UNIVERSITY OF LEEDS United Kingdom EU contribution No data Address Woodhouse Lane LS2 9JT LEEDS See on map Total cost No data
