地学前缘 ›› 2016, Vol. 23 ›› Issue (3): 74-82.DOI: 10.13745/j.esf.2016.03.010

• 煤中微量元素分布与富集规律 • 上一篇    下一篇

准格尔煤田串草圪旦煤矿5号煤元素地球化学特征

杨宁,唐书恒,张松航,陈云云   

  1. 中国地质大学(北京) 能源学院, 北京 100083
  • 收稿日期:2015-09-17 修回日期:2015-11-30 出版日期:2016-05-15 发布日期:2016-05-15
  • 通信作者: 唐书恒(1965—)，男，教授，博士生导师。
  • 作者简介:杨宁（1989—），男，博士研究生，矿产普查与勘探专业。E-mail:yangning@cugb.edu.cn
  • 基金资助:

    国家重点基础研究发展计划“973”项目（2014CB238901）；国家自然科学基金重点项目（41330317）

Geochemistry of trace elements in the No.5 Coal from the Chuancaogedan Mine, Junger Coalfield

YANG Ning,TANG Shuheng,ZHANG Songhang,CHEN Yunyun   

  1. School of Energy Resources, China University of Geosciences(Beijing), Beijing 100083, China
  • Received:2015-09-17 Revised:2015-11-30 Online:2016-05-15 Published:2016-05-15

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摘要：

为研究准格尔串草圪旦5号煤微量元素地球化学特征，采用光学显微镜、扫面电子显微镜和X射线衍射（XRD）方法观测煤中矿物组成及形态特征，应用电感耦合等离子质谱（ICPMS）方法测定煤中多种微量元素含量，运用数理统计方法研究微量元素在煤中的赋存特征。结果表明：5号煤中Li、Be、F、U、Hg 5种元素相对富集，含量高于研究区6号煤及中国煤中含量水平。5号煤中Li、F、Ga、Se无机亲和性强，Be、As、U为亲有机元素；Hg与硫含量显著正相关。各元素在煤中主要以有机结合态、无机结合态和硫化物结合态赋存。

关键词: 煤, 微量元素, 地球化学特征, 准格尔煤田

Abstract:

In order to ascertain the geochemical features of trace elements in the No.5 coal seam at Junger Coalfields Chuancaogedan Coal mine, the mineral composition characteristics were observed through optical microscope, SEM and the Xray Diffraction (XRD) method, the contents of trace elements in coal were determined by Inductively Coupled Plasma Mass Spectrometry (ICPMS), and the occurrence of trace elements were then analyzed based on statistics. The results show that the contents of Li, Be, F, U, Hg in the No.5 coal seam is higher than that in the No.6 coal and Chinese coal. Li, F, Ga, Se are strong inorganic affinity elements, Be, As, U are organic affinity elements, and Hg is of significant positive correlation with sulfur content. Organic combination, inorganic compounds and sulfide bonded forms are the dominant occurrences of these trace elements in the No.5 coal.

Key words: coal, trace elements, geochemical features, Junger Coalfield

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