煤中微量元素一直是煤田地质学和煤质研究的重要组成部分。
The investigation to trace elements in coal has been of importance to coal geology and coal property for decades.
基于煤岩分析、仪器分析及有机溶剂抽提等方法，对焦坪煤进行了系统的煤岩、煤质研究。
This paper deals with petrographic characteristics and coal qualities of Jiaoping coal by means of coal petrologic, instrumental analytical and organic solution extraction methods, and so on.
简要介绍了中国煤质研究的概况，并介绍了中国煤炭的分析方法和标准，将中国的有关标准与iso及其他国家煤的分析标准进行了比较。
This paper introduces survey of China coal quality study, standard and analytical method of coal, standard of China coal is compared with ISO and other country.
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