Identification of Polycyclic Aromatic Compounds Containing Two Heteroatoms in Coal Liquids and Shale Oils. Incremental Funding Request and Annual Progress Report, December 1, 1983-November 31, 1984

摘要

Seventy-three polycyclic aromatic compounds containing sulfur, nitrogen, and oxygen heteroatoms have been synthesized to aid with the identification of predicted compounds in coal liquid fractions. The compounds for which analytical methodology has been developed during this period, and for which identifications have been made, are the hydroxylated two- and three-ring thiophenes, the aminodibenzothiophenes, and the hydroxylated nitrogen heterocycles. The Ames mutagenicities for the 1- and 4-aminodibenzothiophenes were found to be 10-100 times greater than for benzo(a)pyrene. A new fractionation scheme for isolating the sulfur heterocycles was developed. This method is based on ligand exchange chromatography and gives good recoveries of all sulfur heterocycles. Finally, a supercritical fluid fractionation system was constructed and applied to the fractionation of polycyclic aromatic compounds according to number of aromatic rings. 33 references, 21 figures, 5 tables. (ERA citation 10:010850)