丝炭和暗煤的顺磁共振特性研究

STUDY OF ESR CHARACTERISTICS OF FUSAIN AND DURAIN

利用顺磁共振技术和模拟试验方法，对镜煤、丝炭和暗煤同木材、氧化木材、炭化木材和氧化草本泥炭的顺磁共振特性进行了对比研究，首次提出了氧化丝炭和暗煤的顺磁共振图谱。丝炭的谱线呈尖陡的双峰态；暗煤的谱线呈平缓的双峰态。丝炭和暗煤的顺磁共振图谱的差异，可能与它们的原始成煤物质的差异和沉积环境的影响有关，通过对丝炭成因的探讨，得出氧化成因丝炭和火焚成因丝炭的顺磁共振谱线特征明显不同的认识。

ESR characteristics of vitrain, fusain and inertiniterich durain have been studied and compared with those of woody tissue, H2SO4-oxidated and carbonized woody tissues and peat, by means of ESR spectrometer and simulation method. For the first inertinite-rich durain are obtained. The curve of fusain is in the pattern of two steep peaks, and that of durain is in the shape of two flat peaks. The differences may be related to coal-forming materials and sedimentary environment. The factors which influenced the ESR characteristics of different lithotypes are discussed. Based on discussion on origin of fusain, the obvious differences in ESR characteristics between the oxidated and incinerated fusain are recognized.