Identification and quantification of polynuclear organic matter (POM) on particulates from a coal-fired power plant
In Part I of this work, stack ash was compared with electrostatic precipitator hopper ash (ESP ash) and 0 to 3.3 ..mu..m sized fraction of the latter to determine if ESP could be used to predict the identities of constituents, particularly polycyclic aromatic hydrocarbons (PAH), adsorbed on stack ash. Physical and elemental comparison of stack ash with gross and sized ESP ash suggested that the sized ESP ash was a better model of stack ash. Chemical characterization of the stack and sized ESP ash indicated a strong adsorptivity for aromatics paralleling PAH ring size. The benzene extracts of the ashes contained a series of n-paraffins, and the sized ESP ash contained approximately four times more than the stack ash. Only a brief examination of the PAH content was possible with the small amounts of ash available and the trace (ng/g) levels of PAHs present, but the results suggested that the sized ESP ash was similar in PAH content to the stack ash. The sized ESP ash appears to be useful as a qualitative, but not quantitative, surrogate for constituents adsorbed on stack ash. Further studies should include an investigation of the gas phase constituents. Additional studies in Part II led to the separation and characterization of multialkylated PAHs from a coal liquefaction product. The findings of significant microbial mutagenesis for these PAH derivatives led to a more detailed examination of PAHs in ESP hopper ash. PAHs with 3 and 4 rings plus simple alkyl or phenyl substitution predominated in a PAH isolate from the ash, but very few multialkylated PAHs were observed. Sub-ng/g levels of PAHs were measured.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- OSTI ID:
- 6041663
- Report Number(s):
- EPRI-EA-1095
- Country of Publication:
- United States
- Language:
- English
Similar Records
Methods for analysis of trace organic constituents on fly ash
Chemical reactivity of polycyclic organic compounds adsorbed on coal fly ash and related solid surfaces. Progress report, May 1985-April 1986
Related Subjects
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600* -- Coal
Lignite
& Peat-- Properties & Composition
010800 -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ADSORPTION
AEROSOL WASTES
ALKANES
ALKYLATION
AROMATICS
ASHES
BENZENE
BIOASSAY
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMATOGRAPHY
COAL LIQUIDS
ELECTROSTATIC PRECIPITATORS
ELEMENTS
EMISSION SPECTROSCOPY
EQUIPMENT
EXTRACTION
FLUORESCENCE SPECTROSCOPY
FLY ASH
FOSSIL-FUEL POWER PLANTS
GAS CHROMATOGRAPHY
HYDROCARBONS
MASS SPECTROMETERS
MEASURING INSTRUMENTS
MUTAGENESIS
NONDESTRUCTIVE ANALYSIS
ORGANIC COMPOUNDS
PARTICLE SIZE
PARTICLES
POLLUTION CONTROL EQUIPMENT
POLYCYCLIC AROMATIC HYDROCARBONS
POWER PLANTS
RESIDUES
SEPARATION PROCESSES
SIZE
SOLVENT EXTRACTION
SORPTION
SORPTIVE PROPERTIES
SPARK MASS SPECTROMETERS
SPECTROMETERS
SPECTROSCOPY
SURFACE PROPERTIES
THERMAL POWER PLANTS
TRACE AMOUNTS
WASTES
X-RAY EMISSION ANALYSIS
X-RAY FLUORESCENCE ANALYSIS