Identification of genotoxic components of the heavy ends of energy-related materials: Annual technical progress report, January 1, 1987-November 30, 1987
Fourteen standard compounds were synthesized for use in determining compound types in coal-derived liquids. Capillary column gas chromatographhy/mass spectrometry was used to determine whether or not linked aromatic compounds were present in coal-derived liquids. Results indicate the possible presence of these compounds, but at extremely low levels (<0.05%). Therefore, a more direct approach to fractionating, separating, and identifying the heavy end fractions was pursued. Gel permeation chromatography was used to provide molecular weight fractions of an SRC II heavy distillate for analysis by supercritical fluid chromatography. The effects of addition of polar modifiers (propylene carbonate and dimethylformamide) on supercritical fluid solvating power were studied. These modifiers greatly increased the solvating power for large PAH, and will be useful in the application to heavy ends. The liquid crystalline polysiloxane stationary phase was shown to be effective in separating large PAH under supercritical conditions. Finally, a direct heated interface for coupling of a supercritical fluid chromatograph to a mass spectrometer was constructed and successfully evaluated. High molecular weight compounds were successfully analyzed under electron impact ionization conditions at the low nanogram level. 21 figs., 3 tabs.
- Research Organization:
- Brigham Young Univ., Provo, UT (USA). Dept. of Chemistry; University of South Florida, Tampa (USA). Dept. of Chemistry
- DOE Contract Number:
- FG02-86ER60445
- OSTI ID:
- 5675367
- Report Number(s):
- DOE/ER/60445-2; ON: DE88004054
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
01 COAL, LIGNITE, AND PEAT
AROMATICS
CHEMICAL PREPARATION
SEPARATION PROCESSES
SOLUBILITY
CARBON DIOXIDE
SOLVENT PROPERTIES
COAL LIQUIDS
CHEMICAL COMPOSITION
DISTILLATES
ORGANIC COMPOUNDS
PENTANE
ACRIDINES
ALCOHOLS
CARBAZOLES
CARBONATES
FORMAMIDE
GAS CHROMATOGRAPHY
GEL PERMEATION CHROMATOGRAPHY
MOLECULAR WEIGHT
POLYISOPRENE
PROGRESS REPORT
PROPYLENE
SOLVATION
SUPERCRITICAL FLUID CHROMATOGRAPHY
SUPERCRITICAL STATE
TRACER TECHNIQUES
ALKANES
ALKENES
AMIDES
AZAARENES
AZINES
AZOLES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHROMATOGRAPHY
DOCUMENT TYPES
ELASTOMERS
FLUIDS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROXY COMPOUNDS
ISOTOPE APPLICATIONS
LIQUIDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
OXIDES
OXYGEN COMPOUNDS
POLYMERS
PYRIDINES
SYNTHESIS
400105* - Separation Procedures
010600 - Coal
Lignite
& Peat- Properties & Composition