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Das Ozonbildungspotential von synthetischer Waldluft unter dem Einfluß anthropogener Belastung

Anthropogenic impact of the ozone forming potential of synthetic forest air
 
: Nolting, F.; Scheer, V.; Zetzsch, C.

Horsch, F. ; Kernforschungszentrum Karlsruhe GmbH, Projekt Europäisches Forschungszentrum für Maßnahmen zur Luftreinhaltung -PEF-:
6. Statuskolloquium des PEF 1990
Karlsruhe: Kernforschungszentrum, 1990 (KfK-PEF 61)
S.551-561
Kernforschungszentrum Karlsruhe GmbH, Projekt Europäisches Forschungszentrum für Maßnahmen zur Luftreinhaltung (Statuskolloquium) <6, 1990, Karlsruhe>
Deutsch
Konferenzbeitrag
Fraunhofer ITA ( ITEM) ()
forest; forestal air; hydrocarbon; Kohlenwasserstoff; nitric oxide; Ozon; ozone; photochemical smog; photochemischer Smog; smog chamber; Smogkammer; Stickoxid; Terpen; terpene; Wald; Waldluft

Abstract
Simulation experiments were performed in a smog chamber to study the ozone formation of forestal air with special regard of the influence of biogenic hydrocarbons. According to recent field measurments in the Black Forest and near the Harz mountains a synthetic mixture of about 50 components was used for the laboratory studies. An NOx photosmog was used to study the ozone formation at different hydrocarbon/NOx ratios ranging from 0.5 to 25. Compared to hydrocarbonless air the ozone formation increases up to tenfold. In first experiments the impact of terpenes on the ozone formation was studied at hydrocarbon levels around two orders of magnitude above environmental conditions. A decrease in the ozone maximum of a factor of two could be ovserved when terpene concentration is increased by two orders of magnitude compared to the field measurements. Simultaneously the ozone maximum is reached more rapidly.

: http://publica.fraunhofer.de/dokumente/PX-27858.html