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Oxidized vitrinites — their aromaticity, optical properties and possible detection

✍ Scribed by Fariborz Goodarzi; Duncan G. Murchison

Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
319 KB
Volume
52
Category
Article
ISSN
0016-2361

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✦ Synopsis

The behaviour of the dispersion curves of refractive and absorptive index of a vitrinite of high-volatile rank oxidized for different periods of time up to 128 days at 105'C supports the suggestion that the aromaticity and/or condensation of the vitrinite rise when it is oxidized. Equivocal optical data previously obtained for oxidized vitrinites can probably be explained by the extensive use in earlier microscopical studies of wavelengths in the green region of the visible spectrum. Reflectivity-dispersion data indicate that there is greater possibility of distinguishing oxidized and weathered coals from fresh samples with the microscope by comparing their optical properties in the blue region of the visible spectrum or in the uhra-violet.

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