煤中微量元素赋存多元变量分析

Occurrence of Trace Elements in Coal Based on Multivariate Analysis

测试了二叠系山西组和下石盒子组煤中15种主要元素,分析了元素含量的主要特征,并用多元变量分析的方法进行降维聚类,得到了元素的共生组合关系,探讨了元素的主要赋存状态。分析结果显示Ag、As、Br、Mo、Sb等主要以黏土矿物形态存在,Ba、Co、Cr、 Cs、Se、Sr、Zn等主要以硫化物和有机结合态存在,Ta、Th、Zr较可能赋存于锆石中。

15 trace elements in coal from Permian Shanxi formation and Xiashihezi formation were test,concentrations of the 15 elements was analyzed.Multivariate analysis was used to lower dimensions of the data,co-existing behavior was summarized,then the main occurrence of the trace elements was analyzed.The analytical results showed that,Ag,As,Br,Mo,Sb occurred mainly in clay minerals,Ba,Co,Cr,Cs,Se,Sr,Zn were mainly in sulfide or organically bound forms,Ta,Th,Zr were probably embedded in zircon or similar minerals.