Nitration of polycyclic aromatic hydrocarbons adsorbed to different carriers in a fluidized bed reactor |
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Authors: | Thomas Ramdahl Alf Bjørseth David M Lokensgard James N Pitts |
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Institution: | Central Institute for Industrial Research P.O.Box 350 Blindern, Oslo 3, Norway;Statewide Air Pollution Research Center University of California, Riverside, California 92521, USA |
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Abstract: | The reactivity of selected polycyclic aromatic hydrocarbons (PAH) adsorbed to various surfaces has been studied. PAH were adsorbed to silica, alumina or charcoal particles and exposed to ambient concentrations of NO2 in air in a fluidized bed reactor. The reaction products were analyzed by capillary gas chromatography and gas chromatograpy/mass spectrometry.The results show that silica is a more reactive surface than alumina. The charcoal used showed to be very adsorbtive and too little material was recovered for analyses. The reactivity of the PAH compounds studied decrease in the order perylene > benzo(a)pyrene > pyrene > chrysene > fluoranthene and phenanthrene. The relevance of these results to the assessment of the possible formation of nitro-PAH in the atmosphere is discussed. |
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