Effect of nitrogen dioxide on the photochemical and nonphotochemical degradation of pyrene and benzo(a)pyrene adsorbed on coal fly ash

Journal Article · Tue Jan 01 04:00:00 EST 1985 · Chemosphere; (United States)

DOI:https://doi.org/10.1016/0045-6535(85)90119-5· OSTI ID:5010765

Yokley, R A; Garrison, A A; Mamantov, G; Wehry, E L

Nitration by NO/sub 2/ of pyrene or benzo(a)pyrene adsorbed from the vapor phase onto six coal ashes, alumina, and silica substrates is not observed if the NO/sub 2/ is thoroughly purged of nitric acid. Also, the photochemical transformation of pyrene or benzo(a)pyrene adsorbed on these substrates is not detectably influenced by the presence of nitric acid-free NO/sub 2/. Photochemical production of nitro derivatives of adsorbed polycyclic aromatic hydrocarbons in the presence of NO/sub 2/ does not appear to be a significant process unless appreciable concentrations of nitric acid, or perhaps strong oxidants such as ozone, also are present.

• Research Organization: Univ. of Tennessee, Knoxville
• DOE Contract Number: AS05-81ER60006
• OSTI ID: 5010765
• Journal Information: Chemosphere; (United States), Journal Name: Chemosphere; (United States) Vol. 14:11-12; ISSN CMSHA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ADSORPTION
AEROSOL WASTES
AROMATICS
ASHES
ATMOSPHERIC CHEMISTRY
BENZOPYRENE
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
COAL
CONDENSED AROMATICS
ENERGY SOURCES
FLY ASH
FOSSIL FUELS
FUELS
HYDROCARBONS
MATERIALS
NITRATION
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PYRENE
RESIDUES
SORPTION
WASTES