Identification and quantification of polynuclear organic matter (POM) in energy-related materials. Final report
The interaction of stack ash with organic matter was studied for developing methodology to determine polycyclic aromatic hydrocarbons (PAH) and other organic compounds in environmental emissions of fly ash from coal-fired power plants. Stack samples were used in sorptivity studies and analytical methodology development. Carbonaceous particles, ranging from uncombusted coal to coal coke, were identified as principally responsible for the strong sorptivity of ash for PAH. They also influence the distribution of surface area and organic matter in the ash, and may provide a transport mechanism for the emitted organic matter from coal combustion. The total organic content of the carbonaceous particles ranged up to 1.6 mass %. Procedures for the determination of organic matter on ash ranged from gas chromatographic (GC) screening procedures featuring derivatized solvent extracts and thermal desorptions to more complex sequential procedures involving semipreparative scale high performance liquid chromatographic (HPLC) fractionation followed by GC or analytical scale HPLC analysis. The extractable organic content ranged up to 2 mg/g in one sample. Major components identified included C/sub 18/-C/sub 32/ n-paraffins (0.04 to 0.2 ..mu..g/g each), 3 to 5 ring PAH (0.08 to 0.2 ..mu..g/g each), fatty acids, n-heterocyclics, PAH-ketones, and mono/diaromatic hydrocarbons (0.06 to 2.6 ..mu..g/g each).
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6328311
- Report Number(s):
- ORNL/M-109; ON: DE86004498
- Country of Publication:
- United States
- Language:
- English
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Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOL WASTES
AIR POLLUTION MONITORING
AROMATICS
ASHES
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CHROMATOGRAPHY
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL TRANSPORT
FLY ASH
FOSSIL-FUEL POWER PLANTS
GAS CHROMATOGRAPHY
HYDROCARBONS
KINETICS
LIQUID COLUMN CHROMATOGRAPHY
MASS TRANSFER
OPTIMIZATION
ORGANIC COMPOUNDS
POLYCYCLIC AROMATIC HYDROCARBONS
POWER PLANTS
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
RESIDUES
SEPARATION PROCESSES
THERMAL POWER PLANTS
WASTES