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In this comparability, only one,three-D emissions beneath HDPE have been lower with drip utility; 1,3-D emissions under VIF and CP emissions beneath both films had been greater with the drip software. We measured the kinetics of ozonation reaction of 1,1-diphenylethylene (DPE) in artificial snow, produced by shock freezing of DPE aqueous solutions sprayed into liquid nitrogen. It was demonstrated that many of the reactant molecules are in direct (productive) contact with gaseous ozone, thus the method produces snow with organic molecules largely ejected to the surface of snow grains. The kinetic knowledge were used to judge the snow particular surface space (∼70 cm g(-1)).
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This quantity is a measure of the provision of the molecules on the surface for chemical response with gaseous species. The experimental results were according to the Langmuir-Hinshelwood type reaction mechanism. DPE represents environmentally related compounds similar to alkenes which might react with atmospheric ozone, and are relatively plentiful in natural snow.
For typical atmospheric ozone concentrations in polar areas (20 ppbv), we estimated that half-lifetime of DPE on the floor of snow grains is ∼5 days at submonolayer coverages and -15 °C. Our platform could be …