Author(s)

Wolf-Ulrich Palm and Heinz-Ulrich Kriiger

Abstract

Comparison of Ozone Formation from Diesel Exhaust and Rapeoil-methylester (RME): First Results of Smog-Chamber Experiments Guest contribution Wolf-Ulrich Palm and Heinz-Ulrich Kriiger Fraunhofer-InstitutfurToxikologie und Aerosolforschung, Nikolai-Fuchs-Str. 1 D-30625 Hannover, Germany The ozone-forming potential of artificial exhaust mixtures (rapeoil methylester (RME) and diesel) was investigated in teflon bags (V = 400-450 L) at T = 24-26 °C using a sun simulator (HMI 4000 W). The mixtures consist of 23 components and perfluorohexane as inert standard. Ozone formation was determined for high concentrations (RME: 1545 ppb; diesel: 1065 ppb corresponding to 3 % of the original exhaust concentrations) under different HC/NO mixing ratios (4-»14) and for low concentrations (50 ppb) with additional high background concentrations using 500 ppb hexane or hexane//?-xylene in compariso

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