HIGH VOLATILE C BITUMINOUS COAL (from Hanna Bed #2)
C 78.8%; S 0.73%; mineral matter 20.4%; vitrinites 94.9%; exinites 2.1%; inertinites 3.0%
Wyoming, USA (Penn State Coal Sample Bank; PSOC 514)
suspension in methanol; 40 yg
Teq. 610°C; tT 5s; t. 10s; E , 15eV (Extranuclear 5000-1 Py-MS system) z ei
remarks - Compared to Spectrum F.16 (lignite) the methoxyphenol series (at m/z 124, 138, 150, 164) appears to have been replaced by a dihydroxybenzene series with prominent peaks at m/z 110 and 124, apparently as a result of further demethylation. Moreover, aliphatic hydrocarbon series start appearing at m/z 42, 56, 70 etc. (alkenes) and 54, 68, 82 (dienes; perhaps mixed with furans). Note the relatively low sulphur-containing ion peaks at m/z 34, 48 and 64.
Was this article helpful?