Author(s)

Stefan Bauerle and Geert K. Moorgat

Abstract

Absorption Cross Sections of HOCH%OOH Vapour between 205 and 360 nm at 298 K A contribution to subproject CMD Stefan Bauerle and Geert K. Moorgat Max-Planck-Institut fur Chemie, Division of Atmospheric Chemistry, P.O. Box 3060, D-55020Mainz, Germany Introduction Recent studies (Gab et al, 1985; Hellpointer and Gab, 1989; Lee et al, 1993; Sauer et al, 1996; Neeb et al, 1997; Sauer, 1997) have shown that the gas phase reaction of ozone with a variety of biogenic and anthropogenic alkenes contributes to the formation of hydrophilic organic peroxides, which can cause severe damage to plants. Hydroxymethylhydroperoxide (HMHP; HOC^OOH) for example, which results from addition of water to the ozonolysis intermediate CtbOO, has various toxic effects on plant cells and enzymes and is suggested to be the most responsible species for leaf necrosis. All these peroxides may be removed from the atmosphe

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