Mass spectral study of organic sulfur in the polymeric matrix of coal. [Quarterly] technical report, March 1, 1992--May 31, 1992
This report reviews the progress of a project to examine the chemical environment of organic sulfur in the polymeric matrix of Illinois coal by laser desorption ion trap mass spectrometry. This project is developing new laser desorption-ionization schemes for coal which preserve the polymeric matrix. It will compare mass spectra of whole coal with its separated macerals and will analyze organic sulfur in the polymeric matrix of coal by collision induced dissociation and high resolution mass spectrometry. A laser desorption mass spectrum of a trial polymer is shown to demonstrate the advantage of this technique over more traditional electron impact ionization mass spectrometry. A preliminary mass spectrum of THF extracts from a Herrin No. 6 (IBC 101) coal sample is also shown which contains low molecular weight fragments in the 60 to 250 amu region. Efforts are presently underway to obtain higher molecular weight ions from coal samples by optimizing the laser desorption conditions, improving the solvent extraction technique, and extending the mass range of the ion trap.
- Research Organization:
- Illinois Univ., Chicago, IL (United States). Dept. of Chemistry
- Sponsoring Organization:
- USDOE, Washington, DC (United States); Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
- DOE Contract Number:
- FG22-91PC91334
- OSTI ID:
- 10181872
- Report Number(s):
- DOE/PC/91334-T81; ON: DE93000530
- Resource Relation:
- Other Information: PBD: [1992]
- Country of Publication:
- United States
- Language:
- English
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