中文摘要：

针对榆树湾侏罗纪煤中微量有害元素的迁移规律,运用手选富集与浮沉结合的方法,采用电感耦合等离子发射光谱等方法进行了研究。研究结果表明,榆树湾侏罗纪煤中微量有害元素总体水平较低,其中As、Ba、Cd、Cr、Mn、Se和Sr等元素较全国多数煤平均水平明显偏高;As、Ag、B、Ba、Be、Cr、Cu、P、Pb、Ni、Sr、Se和V主要分布在镜质组中;微量有害元素在显微组分中元素更容易析出,Mo受赋存状态的影响较小,热解过程中可达到很高的析出率,Ag、B、Be、V和Pb等元素易挥发且受组分影响较小。陕北地区煤中微量有害元素的研究,对环境保护和侏罗纪系煤炭资源的开发利用及煤的地质成因具有重要的理论和现实意义。

英文摘要：

Aimed at studying migration rule of trace hazardous elements in Jurassic Coal of Yushuwan,the research combined hand picking,heavy-fluid centrifugal methods and ICP-AES.The results showed that hazardous elements in Jurassic coal of Yushuwan were lower than average level,the contents of As、Ba、Cd、Cr、Mn、Se and Sr were higher,As、Ag、B、Ba、Be、Cr、Cu、P、Pb、Ni、Sr、Se and V are mainly distributed in vitrinite,trace hazardous elements were easier to separating elements of macerals,the influence of occurrence on Mo was smaller which reaching a very high exhalation rate during pyrolysis process,and Ag、B、Be、V and Pb were volatile elements and the component has little influence on these elements.The research on trace hazardous elements in Northern Shaanxi region has vital theoretical and practical significance to the environmental protection and the development and utilization of coal resources in Jurassic system.