Mass spectral study of organic sulfur in the polymeric matrix of coal. [Quarterly] technical report, March 1, 1993--May 31, 1993 [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 1993.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 11 pages : digital, PDF file
- Additional Creators:
- United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- This report reviews the seventh quarter progress of a two year 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 attempting to develop new laser desorption-ionization schemes for coal which preserve the polymeric matrix. From work this quarter, we have concluded that ultraviolet matrix assisted laser desorption is not an appropriate method to volatilize high molecular weight material extracted from coal. However, we have found that direct 355 nm laser desorption of neat samples of pyridine extracts from Illinois No. 6 coal gives what appears to be intact molecular ions. Direct laser desorption of the extract using both IR and UV wavelengths produces a distribution of ions between 150 and 1500 amu, with a peak near 500 amu. Work is continuing into the final quarter of this project to obtain such spectra from separated coal macerals and from various other coals.
- Report Numbers:
- E 1.99:doe/pc/92521--t45
- Other Subject(s):
- Published through SciTech Connect.
Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
- Type of Report and Period Covered Note:
- Quarterly; 04/01/1993 - 06/30/1993
- Funding Information:
View MARC record | catkey: 13839063