Examination of sulfur forms in coal by direct pyrolysis and flameless ozone-sulfur chemiluminescence detection
- Tennessee Technological Univ., Cookeville, TN (United States)
The extremely high selectivity of the newly developed ozone-sulfur chemiluminescence detector (SCD) has been coupled with controlled-temperature pyrolysis to allow qualitative and semiquantitative determination of sulfur forms in coal. Pyrolysis products from the heating of a sulfur containing solid sample were swept directly through a high-temperature conversion tube and into the SCD to yield a strong signal. Upon heating the pyrolysis tube from room temperature to 700 degrees C, several distinct peaks were observed by the SCD, identified as being due to aliphatic sulfides and thiols, elemental sulfur, simple thiophenes, pyrite, and complex thiophenes. Standard addition of the pure inorganic substances provided semiquantitative determinations. Three coals were examined and could be quickly and easily distinguished by their sulfur forms. The results are compared with those of other pyrolysis methods.
- OSTI ID:
- 466562
- Report Number(s):
- CONF-951017-; TRN: 96:005999-0094
- Resource Relation:
- Conference: 22. annual conference of the Federation of Analytical Chemistry and Spectroscopy Societies, Cincinnati, OH (United States), 15-20 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of FACSS XXII - the 22nd annual conference of the Federation of Analytical Chemistry and Spectroscopy Societies; PB: 285 p.
- Country of Publication:
- United States
- Language:
- English
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