摘要
通过对贵州西南部黔西断陷区晚二叠世和晚三叠世36个煤层煤样的灰分、硫分、灰成分及21种潜在毒害微量元素进行的分析测试及其相关性分析和聚类分析,得出Cr熏U与煤中灰分成明显正相关;Ba熏Be熏Co熏Cr熏Cu熏Mo熏Se熏Sn熏Th熏Tl熏U熏V等与粘土矿物正相关;碳酸盐矿物中Mn熏Cd熏Ni含量较高;As熏Pb熏Sb熏Zn等主要分布于硫化物矿物中;区内煤中不同来源、不同地质历史时期形成的硫化物中潜在毒害微量元素含量相差甚大;亲有机质的潜在毒害微量元素表现不显著。
Ash content, total S, chemical compositions of ash and 21 potentially hazardous trace elements ?穴PHTEs, of 36 samples from the Qianxi Fault Depression Area ?穴QFDA,, Guizhou province, China have been determined. Correlation and Cluster analyses were performed on the data. The results show that Co, Cu, and U are strongly correlated with the ash yield. A major proportion of PHTEs, such as, Ba, Be, Co, Cr, Cu, Mo, Se, Sn, Th, Tl, U, and V, is associated with the clay minerals. Mn, Cd, and Ni are associated with carbonates. Because sulfides in the coals were formed from different origins and different ages, in which the distribution of PHTEs is obvious changeable, only Sb, Pb, and Zn are correlated with total S content. The PHTEs affinity with organic matter is very low.
出处
《中国煤田地质》
2004年第6期9-11,43,共4页
Coal Geology of China
基金
国家自然科学基金资助项目(批准号:49632090
40272071)
关键词
煤
潜在毒害微量元素
赋存状态
数理统计分析
potentially hazardous trace elements
mode of occurrence
mathematical statistics
southwestern Guizhou
