煤中痕量元素分布特征的聚类分析研究

On a Cluster Analysis of the Distribution of Trace Elements in Coal

测定了青山烟煤、合山烟煤、莱阳无烟煤、加福无烟煤、河南贫煤、黄石贫煤和韶关贫煤等七种不同煤样中的Ａｓ，Ｃｒ，Ｃｏ，Ｐｂ，Ｎｉ，Ｖ，Ｃｕ，Ｃｄ，Ｂｅ，Ｇｅ等１０种痕量元素的含量，并用聚类分析法分别对１０种痕量元素和七种煤样进行分类研究，解释了这些痕量元素在煤中的分布特征。

The contents of ten trace elements As, Cr, Co, Pb, Ni, V, Cu, Cd, Be and Ge in sevendifferent kinds of Chinese coal have been measured. A cluster analysis is made to study theclassiffication of the seven samples and ten elements. Analysis results show that the sevencoal samples can be reasonably classified into three groups, namely, bituminous, anthraciteand lean coal, accounting for the differences in concentration and distribution of the trace ele-ments in coal. Results of the cluster analysis of ten trace elements also show that Be and Geare in the same group because of their similarity in tending to combine with organic sub-stances in coal. On the other hand,As, Ni, Co, Pb, Cu, Cr, and V exhibit even greatersimilarity and are clustered in the same group as their chemical properties will lead them toexist usually in the form of minerals in coal. The distribution features of trace elements incoal are explained.