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用逐级化学提取方法 ,分析了煤中有机质结合的微量元素含量与煤级关系。结果表明 ,有机态结合的微量元素在褐煤中含量比较高。烟煤中含量降低。到无烟煤阶段 ,有机态微量元素含量进一步降低。证明了随煤化程度增加 ,煤中有机态的微量元素含量降低。
With stepwise chemical extraction method, the relationship between trace elements content and coal rank of organic matter in coal was analyzed. The results show that the content of organic bound trace elements in lignite is relatively high. Bituminous coal content decreased. To the stage of anthracite, organic trace elements further reduced. It is proved that with the increase of coalification, the content of organic trace elements in coal decreases.