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Main Title Quantification of Nitro- and Hydroxylated Nitro-Aromatic/Polycyclic Aromatic Hydrocarbons in Selected Ambient Air Daytime Winter Samples.
Author Nishioka, M. G. ;
CORP Author Battelle, Columbus, OH.;Health Effects Research Lab., Research Triangle Park, NC.
Publisher c1992
Year Published 1992
Report Number EPA/600/J-92/420;
Stock Number PB93-141190
Additional Subjects Air pollution sampling ; Aromatic compounds ; Aromatic polycyclic hydrocarbons ; Nitrogen organic compounds ; Photochemical reactions ; Meteorological data ; Urban areas ; Hydroxyl radicals ; Nitrogen oxides ; Solar radiation ; Chemical reactions ; Winter ; Day ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB93-141190 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 11p
Two ambient air samples, both collected in a northern latitude city during winter daytimes, are compared here with regard to NO2-AR/PAH levels and OH-NO2-AR levels from filter and XAD-2 extracts. Detection of a previously unreported environmental constituent, tentatively identified as a NO2-azulene isomer, is discussed. The levels of the OH-NO2-AR were, in general, at least 4 times higher than levels of the corresponding NO2-AR. As with NO2-AR/PAH, OH-NO2-AR appear to be both primary source emissions and secondary photochemical products. The filter-collected para-substituted OH-NO2-AR in these samples appear to be the source emissions, while the XAD-collected ortho- and para-substituted OH-NO2-AR may be products of photochemical reactions. Other pollutant and meterological data, including NO, NO2, HONO, sunlight intensity and fine-particle Pb and K concentrations, are also used to discuss differences between these samples. (Copyright (c) 1992 Pergamon Press Ltd.)