邢台矿区葛泉矿5^#煤中铅和硒的赋存及富集

Occurrence and enrichment of trace elements Pb and Se of 5~# coal seam from Gequan mine,Xingtai coalfield

以邢台矿区葛泉矿5#煤为研究对象,利用电感耦合等离子体质谱(ICP-MS)测定煤中铅和硒的含量,利用扫描电镜(SEM)和光学显微镜观测煤中黄铁矿并测定煤样的镜质体反射率,对5#煤中铅和硒的赋存和富集进行了分析。结果表明邢台矿区葛泉矿5#煤中的铅和硒的含量均值分别为29.13μg/g和3.99μg/g,高于华北煤、贵州煤、中国煤和美国煤中铅和硒含量均值,富集系数分别为1.94和33.27,铅和硒主要富集在黄铁矿中。

Occurrence and enrichment of Pb and Se in coal seam from Gequan Mine of Xingtai Coalfield were analyzed by using inductively coupled plasma mass spectrometry（ICP-MS） to determine the contents of Pb and Se in the coal,and using scanning electron microscope（SEM） and optical microscopy to observe pyrite and test vitrinite reflectance of the coal sample.The results show that the average concentration of Pb is 29.13μg/g and Se 3.99μg/g,which are both higher than those from North China,Guizhou Province and USA;the enrichment factors are up to 1.94 and 33.27 respectively,and mainly enriched in pyrite.