【摘要】 对辽宁北票地区煤中微量元素进行了研究 ,将研究区煤中微量元素的平均质量分数与世界范围煤的微量元素的平均质量分数进行比较 ,发现北票煤中的Cr、Co、Ni、As、Sr、Y、Zr、Ba、Ta、Sc具有较高的富集 ,而Sn、U具有较低的富集 ,这种差异可能主要与聚煤区域的地球化学背景有关。计算了微量元素之间的相关系数 ,得出北票地区煤中稀土元素总量较世界范围稀土元素总量的平均值偏高 ,且煤中稀土元素分布模式十分相似 ,表明在成煤期间陆源物质供应相对稳定。煤中矿物主要为高岭石、石英及方解石及少量的伊利石 ,并对其中的地质成因进行了初步解释。更多还原

【Abstract】 The trace elements of coal in Beipiao coal district, Liaoning Province are studied in this paper. By comparing the average trace elements mass fractions of the coal in Beipiao with the average mass fractions of the trace elements in worldwide coals, it is found out that the concentrations of Cr?Co?Ni?As?Sr?Y?Zr?Ba?Ta and Sc are higher, and concentrations of Sn and U are lower. The analytical data show that different trace elements have different correlations. The average total amount of REE in Beipiao coal is 96 19×10 -6 , which is a little higher than that in worldwide coals. The chondrite normalized distribution patterns of REE in Beipiao coal are very similar, which indicates that during the deposition of coals the terrigenous material derived from relatively acid rocks deposited in a stable condition. Major minerals in Beipiao coal mine are kaolin, quartz, calcite, and minor illite which have a great effect on the trace elements in Bei piao coal.更多还原