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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.
The trace elements in No.9 coal seam of Antaibao open-pit coal mine were systematically determined by ICP-MS, and 53 kinds of trace elements were detected. Compared with the average mass fraction of trace elements in the world, the average enrichment of Li, Ga, Sr, Zr, Nb, Sn and Ta in the coal sample is relatively high, while the average enrichment of Cr, Co, Ni , Ge, Rb, Y, Cs and Ba have lower enrichment. The research data show that different trace elements have different distribution characteristics in the vertical section. The correlation analysis showed that: (1) elements related to vitrinite content were Cs, Sn, Te, Bi, Co, Mo, Au, Tl, W, Cu and B, As; The elements of Pt, Cr, Li, Se, Zr, Ce, Ag, Pr, Nd, La, V, U, Tb, Sm, Eu, , Ga, Ho, Ba, Zn, Y, Cs, Tb. This affinity of trace elements has a certain relationship with the redox of peat bogs and is influenced by the sulfur content and seawater in the coal.