REACTIVE UPTAKE OF OZONE BY LIQUID ORGANIC-COMPOUNDS

The reaction probability of ozone on the surface of several different organic liquids is measured. Ozone reacts efficiently (gamma approxima te to 10(2)-10(-3)) with organic liquids containing double bonds (1-tr idecene, alpha-pinene, toluene, methacrolein and canola oil), and much less efficiently with an aldehyde, a ketone (tridecanal, 2-tridecanon e; gamma approximate to 10(-4)), an alkane, an alcohol and an acid (tr idecane, 1-tridecanol, tridecanoic acid; gamma less than or equal to 1 0(-5)). The results suggest that heterogeneous reactions with organic aerosol can bean important loss process for tropospheric ozone, if the aerosol contains unsaturated organic material.