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高有机硫煤是一种十分特殊的煤种，其特点之一是抽提物芳烃馏分中含丰富的含硫化合物。在我国西南地区晚二叠世碳酸盐台地潮坪成因、具不同煤化程度的四种高有机硫煤中均检测出了四种系列的含硫化合物，它们分别为二苯并噻吩系列、苯并萘并噻吩系列、菲并噻吩系列和苯并二苯半噻吩系列。含硫化合物的类型组成虽然相似，但它们的相互比例关系与煤化程度和具体的沉积环境密切相关。分析发现，随煤化程度增加：（１）具三环结构的二苯并噻吩相对于四、五环结构的化合物数量减少；（２）具稳定甲基取代位的含硫化合物数量不断增加，同时还发现含硫化合物与同环数的常规芳烃间的比值可反映碳酸盐台地受局限的程度
High organic sulfur coal is a very special kind of coal, one of the characteristics of the extract aromatic fraction is rich in sulfur compounds. Four series of sulfur-containing compounds were detected in four kinds of organic sulfur coal with different degrees of coalification in the Late Permian carbonate platform in southwestern China. They are dibenzothiophene series, benzene And naphthothiophene series, phenothiophene series and benzodiazepine hemi-thiophene series. Although the types and compositions of sulfur compounds are similar, their mutual relations are closely related to the degree of coalification and the specific depositional environment. The analysis shows that with the increasing degree of coalification: (1) the number of dibenzothiophenes with tricyclic structure decreases relative to that with tetracyclic or pentacyclic structures; (2) the number of sulfur compounds with stable methyl substitution sites increases continuously It has also been found that the ratio of sulfur-containing compounds to conventional aromatics with the same number of rings can reflect the limited extent of carbonate platforms