Photolysis rates of selected polynuclear aromatic hydrocarbons in aqueous coal-oil systems. [Fluoranthene, benzo(a)anthracene]
Four polynuclear aromatic hydrocarbons (PAH) from the neutral fraction of synfuels materials - fluoranthene (FLA), pyrene (PY), benzo(a)anthracene (BaA), and benzo(a)pyrene (BaP) - were selected as representative test compounds based on toxicity, abundance, and chemical characteristics. BaA and BaP are established carcinogens, and FLA is a suspected cocarcinogen. Pyrene, which is not thought to be carcinogenic, was included for comparison to FLA, which has the same molecular weight but different structural properties. The synthetic fuel material used in this study was CRM-1, a coal-oil comparative research material obtained from Oak Ridge National Laboratory. For PY, BaA, and BaP in aqueous systems, initial photolysis rates are six to nine times lower in coal-oil (CRM-1) saturated water than in pure water. However, the photolysis rate of FLA is not significantly different under the same conditions. It is possible that the photochemical mechanisms inhibited in the photoreactive PAH are not operational in FLA. Since the calculated light attenuation can account only partially for the observed reduction of the photolysis rates of PY, BaA, and BaP, it is likely that other factors - especially the presence of phenols - are affecting the photodegradation process of these PAH. Further studies are needed to investigate the individual effects on PAH photolysis rates of the various classes of compounds that make up the coal-oil matrix. 20 references, 2 figures, 4 tables.
- Research Organization:
- Argonne National Lab., IL (USA); Michigan Univ., Ann Arbor (USA). Dept. of Environmental and Industrial Health
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 5505507
- Report Number(s):
- CONF-8310179-6; ON: DE84004019
- Resource Relation:
- Conference: 8. international symposium on polynuclear aromatic hydrocarbons, Columbus, OH, USA, 26 Oct 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BENZOPYRENE
PHOTOLYSIS
CONDENSED AROMATICS
PYRENE
AQUEOUS SOLUTIONS
CHEMICAL REACTION KINETICS
COAL LIQUIDS
EXPERIMENTAL DATA
SYNTHETIC FUELS
ULTRAVIOLET SPECTRA
AROMATICS
CHEMICAL REACTIONS
DATA
DECOMPOSITION
DISPERSIONS
FLUIDS
FUELS
HYDROCARBONS
INFORMATION
KINETICS
LIQUIDS
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
REACTION KINETICS
SOLUTIONS
SPECTRA
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)
400500 - Photochemistry