Reflectivity Spectrum and Optical Constants of Bituminous Coal; Estimation of Aromaticity

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Science  24 Jul 1959:
Vol. 130, Issue 3369, pp. 220-221
DOI: 10.1126/science.130.3369.220-a


The spectra of reflectivities, refractive indices, and absorption indices of a bituminous coal vitrain have been determined for the ultraviolet-visible spectral region. The low values for these quantities support the premise that polynuclear condensed aromatics may be present in coal only in small amounts. Aliphatic and amorphous carbons may predominate. suggested for glass (6).