Mass spectral study of organic sulfur in the polymeric matrix of coal. Technical report, December 1, 1992--February 28, 1993.

摘要

This report reviews the sixth 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. During this quarter, we extended experiments utilizing ultraviolet matrix assisted laser desorption ionization to the examination of solvent extracts of coal. Regardless of the matrix compound, concentration, or laser wavelength chosen, only carbon cluster ions were observed in the mass spectra. During the next quarter, we will attempt to apply laser desorption of neutral compounds followed chemical ionization to form intact molecular ions from the polymeric component of coal.