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- W335957435 abstract "Samples for mutagenicity assay were obtained from the EPA/DOE Fossil Fuels Research Materials Facility at Oak Ridge. They included shale oil, petroleum crudes, syncrude oil and H-coal process materials. No sample tested was mutagenic for any Salmonella strain in the absence of S9 for metabolism. TA98 was most responsive to the mutagenic activity of these materials followed by TA1538 and TA100. The vacuum bottoms (fuel oil mode) reverted TA1537 to the same extent as TA100, indicative of the presence of material similar to acridine. Results of testing of whole samples were in good agreement with sums of weighted fractional activities published by Guerin et al. (1981). H-coal vacuum bottom samples from two modes of operation were similar to DOE experimental H-coal process samples (ETTM-11 and ETTM-18) in these respects: (1) mutagenicity of the whole sample, (2) distribution of components into fractions by organic solvents, and (3) mutagenicity of specific fractions. Methods were developed to analyze for polycyclic aromatic hydrocarbons and their heterocyclic aromatic analogs in solvent-extracted fractions of H-coal materials using a combination of neutral alumina and high performance liquid chromatography (HPLC) and fluorescence spectroscopy techniques. The neutral alumina chromatography, a necessary precursor to HPLC, increased the longevity of /sup more » C/18 reverse column and improved the peak resolution of HPLC chromatograms. The HPLC chromatograms of five H-coal hexane and toluene-extracted fractions showed prominent peaks with retention times of 7.5 and 11.5 minutes and a large group of peaks from 18 to 24 minutes. HPLC retention times and fluoresence spectra were used to identify pyrene at 11.5 minutes and tentatively identify tryphenylene and chrysene at 16 and 18 minutes, respectively. Additional HPLC separations and mass spectral analyses are planned. 3 figures, 24 tables. « less" @default.
- W335957435 created "2016-06-24" @default.
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- W335957435 date "1982-01-01" @default.
- W335957435 modified "2023-09-27" @default.
- W335957435 title "Exploratory research on mutagenic activity of coal-related materials. Final report, October 1, 1981-December 28, 1982. [Triphenylene]" @default.
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