Identification of genotoxic components of the heavy ends of energy-related materials: Annual technical progress report, January 1, 1987-November 30, 1987

Technical Report · Tue Dec 01 04:00:00 EST 1987

OSTI ID:5675367

Lee, M L; Castle, R N

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
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
&amp; Peat-- Properties &amp; Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ACRIDINES
ALCOHOLS
ALKANES
ALKENES
AMIDES
AROMATICS
AZAARENES
AZINES
AZOLES
CARBAZOLES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONATES
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHROMATOGRAPHY
COAL LIQUIDS
DISTILLATES
DOCUMENT TYPES
ELASTOMERS
FLUIDS
FORMAMIDE
GAS CHROMATOGRAPHY
GEL PERMEATION CHROMATOGRAPHY
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROXY COMPOUNDS
ISOTOPE APPLICATIONS
LIQUIDS
MOLECULAR WEIGHT
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
OXIDES
OXYGEN COMPOUNDS
PENTANE
POLYISOPRENE
POLYMERS
PROGRESS REPORT
PROPYLENE
PYRIDINES
SEPARATION PROCESSES
SOLUBILITY
SOLVATION
SOLVENT PROPERTIES
SUPERCRITICAL FLUID CHROMATOGRAPHY
SUPERCRITICAL STATE
SYNTHESIS
TRACER TECHNIQUES