| 晋北-宁北煤中痕量元素的地球化学特征 |
| |
| 引用本文： | 宋党育,秦勇,张军营,王文峰,郑楚光.晋北-宁北煤中痕量元素的地球化学特征[J].地球化学,2005,34(3):248-256. |
| |
| 作者姓名： | 宋党育 秦勇 张军营 王文峰 郑楚光 |
| |
| 作者单位： | 1. 华中科技大学,煤燃烧国家重点实验室,湖北,武汉,430074
2. 中国矿业大学,资源与地球科学学院,江苏,徐州,221008 |
| |
| 基金项目： | 中国煤田地质总局科研项目，国家自然科学基金 |
| |
| 摘 要： | 应用仪器中子活化 (INAA)、电感耦合等离子体原子发射光谱 (ICP- AES)和原子吸收光谱 (AAS)等方法测定了晋北-宁北一线 5对矿井、 2个露天矿、 5个电厂和 3个洗煤厂煤中环境敏感性痕量元素的含量;通过与中国土壤、其他地区煤以及世界范围煤中痕量元素含量进行对比,总结了研究区痕量元素的分布、富集特征,得知部分地区煤中 Hg、 Cd和 Se的含量较高,在燃烧利用过程中可能对环境造成影响.通过分析痕量元素与灰分、挥发分的相关性以及痕量元素间、痕量元素与 Al、 Fe和 Sp的相关、聚类特性,探讨了痕量元素间及其与矿物质间的亲合性及赋存特征.
|
| 关 键 词： | 煤 痕量元素 地球化学 赋存状态 |
| 文章编号： | 0379-1726(2005)03-0248-09 |
| 修稿时间： | 2004年6月7日 |
Geochemistry of trace elements in coal from North Shanxi Province to North Ningxia Huizu Autonomous Region |
| |
| SONG Dang-yu,QIN Yong,ZHANG Jun-ying,WANG Wen-feng,ZHENG Chu-guang.Geochemistry of trace elements in coal from North Shanxi Province to North Ningxia Huizu Autonomous Region[J].Geochimica,2005,34(3):248-256. |
| |
| Authors: | SONG Dang-yu QIN Yong ZHANG Jun-ying WANG Wen-feng ZHENG Chu-guang |
| |
| Abstract: | The concentrations of nineteen environmentally-sensitive trace elements in coal collected from 5 mines, 2 strip mines, 5 power plants and 3 coal washeries from North Shanxi Province to North Ningxia Huizu Autonomous Region are determined using instrumental neutron activation analysis (INAA), inductively coupled plasma atomic emission spectrometry (ICP-AES) and atomic absorption spectrometry (AAS). Comparison with Chinese and world averages and arithmetical means of concentrations in American coals shows that the concentrations of Hg, Se and Cd are higher in some mine coals. The relationships of concentrations with rank, ash yield and pyritic sulfur indicate that: 1) the contents of Mo, Se, Cr, V, Pb and U are correlative with ash yield; 2) the contents of As, Be, Th, Pb, Sb and Zn are correlative with pyritic sulfur; and 3) deposition environment is more important affecting factor than rank. The modes of occurrence of trace elements are determined by indirect method such as relativity analysis and clustering analysis. The results show that Se, Cr, V, U, Mo, Pb and Th are associated to ash yield while Pb, Th and Hg occur mainly in sulfur mineral and U, Mo, Co and P are distributed in clay mineral. |
| |
| Keywords: | coal trace element geochemistry mode of occurrence |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
