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Showing 1 to 5 of 5 for “"environmentally persistent free radicals"”.
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Formation and Stabilization of Combustion-Generated Environmentally Persistent Free Radicals on Transition Metal Oxides Supported on Silica
The formation of environmentally persistent free radicals in combustion system was investigated from chemisorptions of chlorine- and hydroxy-substituted benzenes on transition metal oxide surface under post-combustion conditions. This manuscript reports the formation of EPFRs on silica particles …
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Gas-Phase Formation of Environmentally Persistent Free Radicals from Thermal Degradation of Catechol, Hydroquinone, Phenols and Tobacco
… exogenous redox cycling to form semiquinone type radicals responsible of Reactive Oxygen Species (ROS) formation. ROS such as hydroxyl radicals can cause severe oxidative stress on biological tissues and can provoke severe signaling pathways leading to cardiovascular and pulmonary dysfunctions and …
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Formation of Environmentally Persistent Free Radicals on the Surface of Iron Oxide and Interior of Montmorillonite Clay
<p>Environmentally persistent free radicals (EPFRs) are a new class of pollutants known to damage the lungs and heart, as well as catalyze the formation of toxic compounds such as dioxins and furans. EPFRs are known to form on metal oxide nanoparticles’ surface, including iron (III) oxide, and …
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Single-crystal metal oxides and supported metal nanoclusters as model catalyst sytems
… oxide surfaces that catalyze the formation of environmentally persistent free radicals (EPFRs) from aromatic precursors, and Au and Cu nanoparticles that may be suitable catalysts for the catalytic oxidation of CO or hydrogenation of CO2. First, we examine the adsorption behavior of phenol on …
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Measurements of Atmospheric Radicals
… are polycyclic aromatic hydrocarbons (PAH) and environmentally persistent free radicals (EPFR). Many PAH are photoactive and oxidize in the atmosphere into derivatives that can cause more oxidative damage than the parent compounds (oxPAH). Both PAH and EPFR are formed during the combustion …