Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Heterogeneous ozonation kinetics of polycyclic aromatic hydrocarbons on organic films
AbstractThe room temperature heterogeneous reaction rates of gas-phase ozone with naphthalene, anthracene, fluoranthene, phenanthrene, pyrene, and benzo[a]pyrene were measured over a range of ozone concentrations from 3.5×1014 to 2.3×1016molec.cm−3. The polycyclic aromatic hydrocarbons (PAHs) were dissolved in organic mixtures composed of octanol or decanol along with proxies for compounds known to be present in “urban grime” films. In all cases, the reaction kinetics were well-described by the Langmuir–Hinshelwood mechanism, which suggests a surface reaction. The adsorption of PAHs to the air–organic interface was confirmed by an adsorption isotherm of anthracene. The presence of the additional organic compounds generally did not affect the reaction rates; however, unsaturated species such as oleic acid and squalene reduced the observed rates significantly.
Heterogeneous ozonation kinetics of polycyclic aromatic hydrocarbons on organic films
AbstractThe room temperature heterogeneous reaction rates of gas-phase ozone with naphthalene, anthracene, fluoranthene, phenanthrene, pyrene, and benzo[a]pyrene were measured over a range of ozone concentrations from 3.5×1014 to 2.3×1016molec.cm−3. The polycyclic aromatic hydrocarbons (PAHs) were dissolved in organic mixtures composed of octanol or decanol along with proxies for compounds known to be present in “urban grime” films. In all cases, the reaction kinetics were well-described by the Langmuir–Hinshelwood mechanism, which suggests a surface reaction. The adsorption of PAHs to the air–organic interface was confirmed by an adsorption isotherm of anthracene. The presence of the additional organic compounds generally did not affect the reaction rates; however, unsaturated species such as oleic acid and squalene reduced the observed rates significantly.
Heterogeneous ozonation kinetics of polycyclic aromatic hydrocarbons on organic films
Kahan, T.F. (Autor:in) / Kwamena, N.-O.A. (Autor:in) / Donaldson, D.J. (Autor:in)
Atmospheric Environment ; 40 ; 3448-3459
06.02.2006
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Slurry-Phase Ozonation for Remediation of Sediments Contaminated by Polycyclic Aromatic Hydrocarbons
| Taylor & Francis Verlag | 2002
Mechanisms of interaction between polycyclic aromatic hydrocarbons and dissolved organic matters
| Taylor & Francis Verlag | 2014