Pyrolysis-gas chromatography/mass spectrometry and pyrolysis-gas chromatography/Fourier transform infrared/flame ionization detection studies of particle size fractions of woody peat

Peat types are categorized by botanical composition and degree of degradation. The more decomposed, or sapric peats, contain a higher percentage of finer particles than the least decomposed, or fibric peats. These finer particles represent the degradative remains of larger plant particles and, hence...

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Bibliographic Details
Published in:Journal of analytical and applied pyrolysis 1989-05, Vol.16 (1), p.5-25
Main Authors: Calvert, G.D., Esterle, J.S., Durig, J.R.
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Exact sciences and technology
Flame ionization detection
Fourier transform infrared spectroscopy
Fuels
gas chromatography
mass spectrometry
Peat
pyrolysis
Wood. Peat. Brown coal
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Summary:Peat types are categorized by botanical composition and degree of degradation. The more decomposed, or sapric peats, contain a higher percentage of finer particles than the least decomposed, or fibric peats. These finer particles represent the degradative remains of larger plant particles and, hence, possess a chemical composition indicative of increasing humification. Pyrolysis-gas chromatography/Fourier transform infrared/flame ionization detection (FID) and pyrolysis-gas chromatography/mass spectrometry studies have been conducted on woody peats from a deposit near Jambi, Sumatra, Indonesia, in an attempt to correlate particle size fractions to chemical composition. Fifty-seven compounds, classified according to their origins (e.g., eugenol, which is derived from guaiacyl type lignins), are quantitatively monitored by normalizing the FID response to 1 for each particle size fraction for each sample. The relative concentrations for each compound are then plotted versus three particle size fractions, and a classification scheme developed based upon those plots. The schemes classify the compounds as being either more concentrated in the finer size fractions, coarse size fractions, or as having no discernible particle size fraction trend. The fate of individual compounds and classes of compounds (e.g., hexoses) are presented, and the chemical composition of the various peat types are reconstructed from these data.
ISSN:0165-2370
1873-250X
DOI:10.1016/0165-2370(89)80032-4