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详细阐述了鄂尔多斯盆地煤的灰分产率和硫、磷及氯含量的空间及垂向分布规律，并探讨了煤中硫。磷及氯含量的影响因素。研究结果表明，石炭-二叠纪煤以中灰煤为主，部分为高灰煤；低灰煤仅分布在局部地区，且灰分产率与全流呈负相关；延安组以特低灰—低灰煤为主，中灰煤次之，空间上灰分北高南低、东高西低；太原组以中高硫煤为主，山西组则以低硫煤为特征，空间上呈南高北低、西高车低之趋势；延安组亦以低硫煤为主。煤中形态硫以黄铁矿硫为主，有机硫次之，硫酸盐硫极少。从太原组到山西组再到延安组，煤中硫呈递减趋势，这与聚煤环境的变化密切相关。该盆地煤含磷低，少部分为特低磷煤。煤中氯的质量分数值平均为425．8×10-6，空间上中南部高、北西部低；垂向上，下部煤层中氯的含量高于中上部煤层，这可能与煤中氯的成因有关。
The paper expounds in detail the spatial and vertical distribution of coal ash and sulfur, phosphorus and chlorine in the Ordos Basin and discusses the sulfur content in the coal. Factors influencing phosphorus and chlorine content. The results show that the Middle Permian coal is dominated by medium-ash coal and some are high-ash coal; the low-ash coal is only distributed in some areas and the ash yield rate is negatively correlated with the whole flow; Low-ash coal, followed by the gray coal, ash in the space is high in the north, low in the north, high in the east and low in the west. The Taiyuan Formation is dominated by medium and high-sulfur coal while the Shanxi Formation is characterized by low-sulfur coal, Low, high West cars low trend; Yan’an group also low-sulfur coal-based. The sulfur in the coal is mainly pyrite sulfur, followed by organic sulfur, with very few sulfate sulfur. From Taiyuan Formation to Shanxi Formation to Yan’an Formation, sulfur in coal shows a decreasing trend, which is closely related to the change of coal accumulation environment. The basin low phosphorus content, a small part of ultra-low phosphorus coal. The average mass fraction of chlorine in coal is 425.8 × 10-6, which is high in central and southern part of the coal and low in the north part of west China. The content of chlorine in upper and lower coal seam is higher than that in middle and upper coal seam, which may be related to the formation of chlorine related.