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Laser induced coal fluorescence. Twelfth quarterly technical progress report, July 1-September 31, 1985

Technical Report ·
OSTI ID:6377570
The analysis of the two coal series resulted in the formulation of the working hypothesis that the two fluorescene lifetimes are coming from two different fluorophores: the first of these is common to the five maceral types studied (alginite, sporinite, cutinite, fluorinite, and resinite); and the second is transforming into the first component as the coal matures. This would explain the trends we saw in the five of the nine maceral types studied. The remaining four maceral types, showed more complex variations in the time-resolved parameters, which could not be explained at the present time. We hope that by studying the variation of the parameters with respect to the concentrations of various model solutions, these other trends in coal may be explained. We are currently studying the relationship between the relative concentration of component solutions and the time-resolved parameters A/sub i/ (the pre-exponential coefficients), T/sub i/ (the decay times) and P/sub i/ (component percentages). It is expected that these effects will explain some of the trends we have observed in coal. 2 figs.
Research Organization:
Texas Tech Univ., Lubbock (USA)
DOE Contract Number:
FG22-82PC50801
OSTI ID:
6377570
Report Number(s):
DOE/PC/50801-12; ON: DE86004271
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ALCOHOLS
AMINES
CARBONACEOUS MATERIALS
CARBOXYLIC ACIDS
COAL
COUMARIN
DATA
DATA ANALYSIS
DISPERSIONS
DYES
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
ENERGY SOURCES
ENERGY TRANSFER
ESTERS
ETHANOL
EXPERIMENTAL DATA
FLUORESCENCE
FOSSIL FUELS
FUELS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
LACTONES
LASER RADIATION
LUMINESCENCE
MACERALS
MATERIALS
MIXTURES
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PYRANS
RADIATIONS
REAGENTS
RESEARCH PROGRAMS
RHODAMINES
SPECTRA