Separation and determination of polycyclic aromatic hydrocarbons and nitrogen heterocycles pertaining to coal gasification, tar sands, shale oil, coal liquids, and related samples. Final technical progress report, January 1978-December 1979
A method was developed for identifying and determining benzo(a)pyrene in a filtered retort water sample from an in situ oil shale process by employing liquid-liquid extraction, dry-column chromatography, thin-layer chromatography and fluorescence spectrometry. The accuracy and precision of the method were good, and the limit of detection was approximately 0.08 ppB. Irreproducible results were obtained with unfiltered retort water samples. Programmed multiple development was used to a limited extent in the separation of polycyclic aromatic hydrocarbons from a shale oil sample. However, results indicated that this separation technique should be investigated further in the separation of polycyclic aromatic hydrocarbons. Benzo(a)pyrene was determined in several shale oil samples by methods developed previously. Polycyclic aromatic hydrocarbons were characterized in several shale oil samples using open-column, dry-column and thin-layer chromatography as separation steps. Visible fluorescence from the separated components on chromatoplates was measured directly to obtain fluorescence profiles of the components on the chromatoplates. Several comparisons were made among the shale oil samples as to the relative amounts of 6-, 5-, 4- and 3-ring polycyclic aromatic hydrocarbons. The theoretical and practical analytical aspects of the room temperature phosphorescence of nitrogen heterocycles were investigated. Intense room temperature phosphorescence was obtained from several nitrogen heterocycles when these compounds were absorbed on silica gel. Theoretical explanations were given for the intense phosphorescence. Benzo(f)quinoline and phenanthridine were separated from a shale oil sample by open-column and high performance liquid chromatography, and then identified by room temperature phosphorescence.
- Research Organization:
- Wyoming Univ., Laramie (USA). Dept. of Chemistry
- DOE Contract Number:
- AS20-79LC01761
- OSTI ID:
- 5420890
- Report Number(s):
- DOE/LC/01761-T1
- Country of Publication:
- United States
- Language:
- English
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37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
POLYCYCLIC AROMATIC HYDROCARBONS
FLUORESCENCE SPECTROSCOPY
SEPARATION PROCESSES
BENZOPYRENE
CHEMICAL ANALYSIS
CHROMATOGRAPHY
COAL GASIFICATION
COAL LIQUEFACTION
COAL LIQUIDS
EXTRACTION
FLUORESCENCE
HETEROCYCLIC COMPOUNDS
OIL SANDS
OIL SHALES
ORGANIC NITROGEN COMPOUNDS
PHOSPHORESCENCE
SHALE OIL
AROMATICS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CONDENSED AROMATICS
EMISSION SPECTROSCOPY
ENERGY SOURCES
FOSSIL FUELS
FUELS
GASIFICATION
HYDROCARBONS
LIQUEFACTION
LUMINESCENCE
MINERAL OILS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
SPECTROSCOPY
SYNTHETIC FUELS
SYNTHETIC PETROLEUM
THERMOCHEMICAL PROCESSES
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