山西平朔安太堡露天矿9号煤层中的微量元素  

TRACE ELEMENTS IN 9 COAL FROM ANTAIBAO OPEN PIT MINE, PINGSHUO, SHANXI PROVINCE

作　　者：庄新国[1,2] 曾荣树[1,2] 徐文东 

机构地区：[1]中国地质大学资源学院 [2]中国科学院地质研究所

出　　处：《地球科学（中国地质大学学报）》1998年第6期583-588,共6页Earth Science-Journal of China University of Geosciences

基　　金：国家自然科学基金

摘　　要：使用ＩＣＰ－ＭＳ方法对安太堡露天矿９号煤层中的微量元素进行了系统测定，检测出５３种微量元素．将研究煤样的平均微量元素质量分数与世界范围微量元素平均质量分数相比较，煤样中Ｌｉ，Ｇａ，Ｓｒ，Ｚｒ，Ｎｂ，Ｓｎ和Ｔａ具有较高的富集，而Ｃｒ，Ｃｏ，Ｎｉ，Ｇｅ，Ｒｂ，Ｙ，Ｃｓ和Ｂａ具有较低的富集．研究资料表明不同微量元素在垂向剖面上其质量分数具有不同的分布特征．经相关分析表明：（１）与镜质组含量相关的元素有，Ｃｓ，Ｓｎ，Ｔｅ，Ｂｉ，Ｃｏ，Ｍｏ，Ａｕ，Ｔｌ，Ｗ，Ｃｕ以及Ｂ，Ａｓ；（２）与惰性组含量相关的元素有，Ｐｔ，Ｃｒ，Ｌｉ，Ｓｅ，Ｚｒ，Ｃｅ，Ａｇ，Ｐｒ，Ｎｄ，Ｌａ，Ｖ，Ｕ，Ｔｂ，Ｓｍ，Ｅｕ，Ｂｅ，Ｔｉ；（３）与煤灰分相关的元素有，Ｒｂ，Ｇａ，Ｈｏ，Ｂａ，Ｚｎ，Ｙ，Ｃｓ，Ｔｂ．微量元素的这种亲合性与泥炭沼泽的氧化还原性有一定的关系，并且受煤中硫含量和海水的影响．Trace elements of 9 coal from Antaibao open pit mine were measured by ICP_MS and fifty_three kinds of elements were determined. When a comparison was made between the average trace element mass fraction of 9 coal from Antaibao open pit mine and those of the average mass fraction in worldwide coals, 9 coal from Antaibao open pit mine shows higher concentrations of Li, Ga, Sr, Zr, Nb, Sn and Ta, and lower concentrations of Cr, Co, Ni, Ge, Rb, Y, Cs and Ba. The analytical data show the different trace elements have the different distributions in the vertical profile of 9 coal. The correlation analysis shows: (1) trace elements correlated with vitrinite content are Cs, Sn, Te, Bi, Co, Mo, Au, Tl, W, Cu, B and As; (2) trace elements correlated with inertinite content are Pt, Cr, Li, Se, Zr, Ce, Ag, Pr, Nd, La, V, U, Tb, Sm, Eu, Be and Ti; and (3) trace elements correlated with ash mass fraction are Rb, Ga, Ho, Ba, Zn, Y, Cs and Tb. The distributions and affinities of trace elements in the vertical profile of 9 coal are correlated with the reduction_oxidation of the swamp and prove to be affected by the sulphur mass fraction of the coals and the marine water.

关 键 词：煤 微量元素 露天矿 煤矿床 

分 类 号：P618.110.4[天文地球—矿床学] TQ533.1[天文地球—地质学]