Kinetics of heterogeneous reactions of ozone with representative PAHs and an alkene at the air?ice interface at 258 and 188 K

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F14%3A00074345" target="_blank" >RIV/00216224:14310/14:00074345 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1039/c3em00665d" target="_blank" >http://dx.doi.org/10.1039/c3em00665d</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c3em00665d" target="_blank" >10.1039/c3em00665d</a>

Result language
angličtina
Original language name
Kinetics of heterogeneous reactions of ozone with representative PAHs and an alkene at the air?ice interface at 258 and 188 K
Original language description
The kinetics of the reaction of an alkene (E-stilbene) and three polycyclic aromatic hydrocarbons (perylene, anthracene and fluoranthene), as examples of environmental pollutants, with ozone on the surface of ice grains (also called ?artificial snow?), produced by shock-freezing of aqueous solutions, was studied at submonolayer pollutant coverages (c = 1.5 x 10-8 to 3 x 10-10 mol kg-1) and two different temperatures (258 and 188 K). This work supports and extends our previous discovery of a remarkable increase in the apparent ozonation rates with decreasing temperature. The ozonation kinetic results were evaluated using the Langmuir?Hinshelwood model and, in one case, the Eley?Rideal kinetic model. It is shown that the apparent rate enhancement is related to the specific nature of the ice surface at different temperatures, which influences the availability of contaminants to gaseous ozone, and to inherent reactivities of the contaminants.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CC - Organic chemistry
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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