Title : Reactive uptake of NO3, N2O5, NO2, HNO3, and O3 on three types of polycyclic aromatic hydrocarbon surfaces.

Pub. Date : 2008 Apr 10

PMID : 18311955






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1 Reactive uptake of NO3, N2O5, NO2, HNO3, and O3 on three types of polycyclic aromatic hydrocarbon surfaces. Polycyclic Aromatic Hydrocarbons NBL1, DAN family BMP antagonist Homo sapiens
2 We investigated the reactive uptake of NO3, N2O5, NO2, HNO3, and O3 on three types of solid polycyclic aromatic hydrocarbons (PAHs) using a coated wall flow tube reactor coupled to a chemical ionization mass spectrometer. Polycyclic Aromatic Hydrocarbons NBL1, DAN family BMP antagonist Homo sapiens
3 We investigated the reactive uptake of NO3, N2O5, NO2, HNO3, and O3 on three types of solid polycyclic aromatic hydrocarbons (PAHs) using a coated wall flow tube reactor coupled to a chemical ionization mass spectrometer. Polycyclic Aromatic Hydrocarbons NBL1, DAN family BMP antagonist Homo sapiens
4 Reaction of NO3 radicals with all three PAHs was observed to be very fast with the reactive uptake coefficient, gamma, ranging from 0.059 (+0.11/-0.049) for benz[a]anthracene at 273 K to 0.79 (+0.21/-0.67) for pyrene at room temperature. Polycyclic Aromatic Hydrocarbons NBL1, DAN family BMP antagonist Homo sapiens
5 Reaction of NO3 on all three PAH surfaces slowed down at 263 K after long NO3 exposure times, suggesting that the PAH molecules were reactants. Polycyclic Aromatic Hydrocarbons NBL1, DAN family BMP antagonist Homo sapiens
6 Reaction of NO3 on all three PAH surfaces slowed down at 263 K after long NO3 exposure times, suggesting that the PAH molecules were reactants. Polycyclic Aromatic Hydrocarbons NBL1, DAN family BMP antagonist Homo sapiens
7 Reaction of NO3 on all three PAH surfaces slowed down at 263 K after long NO3 exposure times, suggesting that the PAH molecules were reactants. Polycyclic Aromatic Hydrocarbons NBL1, DAN family BMP antagonist Homo sapiens
8 Our results show that under certain atmospheric conditions, NO3 radicals can be a more important sink for PAHs than NO2, HNO3, N2O5, or O3 and impact tropospheric lifetimes of surface-bound PAHs. Polycyclic Aromatic Hydrocarbons NBL1, DAN family BMP antagonist Homo sapiens
9 Our results show that under certain atmospheric conditions, NO3 radicals can be a more important sink for PAHs than NO2, HNO3, N2O5, or O3 and impact tropospheric lifetimes of surface-bound PAHs. Polycyclic Aromatic Hydrocarbons NBL1, DAN family BMP antagonist Homo sapiens