| 标准曲线法测定煤中自由基含量 |
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| 引用本文： | 郑榕萍,潘铁英,史新梅,周丽芳,刘瑞民,张德祥,高晋生.标准曲线法测定煤中自由基含量[J].波谱学杂志,2011,28(2):259-264. |
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| 作者姓名： | 郑榕萍 潘铁英 史新梅 周丽芳 刘瑞民 张德祥 高晋生 |
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| 作者单位： | 华东理工大学,分析测试中心,上海,200237;华东理工大学,资源与与环境工程学院,上海,200237 |
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| 基金项目： | 国家自然科学基金资助项目，国家高技术研究发展计划资助项目("863"计划)，国家重点基础研究发展计划资助项目 |
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| 摘 要： | 自由基在煤变质过程、煤自燃反应及煤热解和液化中发挥着重要作用，准确测量煤中自由基总量对于研究上述煤的反应机理具有一定的理论意义. 由于单点法测量煤中自由基含量的准确度及精确度不够，该文通过考察ESR测定自由基含量的稳定性和重复性，尝试建立了标准曲线方法测定煤中的自由基含量，得到了满意的结果. 稳定性实验的相对标准偏差（RSD）＜4%,重复性实验的相对准偏差（RSD）＜3%，自由基含量在本实验范围（6.12×1015~1.47×1017）内线性关系良好，相关系数＞0.99. 实验结果表明，该方法对煤中自由基含量测定有很好的精密度和准确性.
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| 关 键 词： | 电子顺磁共振(ESR) 标准曲线法 自由基 煤 |
| 收稿时间： | 2010-09-22 |
Quantitative Determination of Free Radical Content in Coal by Standard Curve Method |
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| ZHENG Rong-ping,PAN Tie-ying,SHI Xin-mei,ZHOU Li-fang,LIU Rui-min,ZHANG De-xiang,GAO Jin-sheng.Quantitative Determination of Free Radical Content in Coal by Standard Curve Method[J].Chinese Journal of Magnetic Resonance,2011,28(2):259-264. |
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| Authors: | ZHENG Rong-ping PAN Tie-ying SHI Xin-mei ZHOU Li-fang LIU Rui-min ZHANG De-xiang GAO Jin-sheng |
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| Institution: | 1. Analysis and Research Center, East China University of Science and Technology, Shanghai 200237, China；;
2. College of Resource and Environment Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | Free radicals play important roles in the metamorphic process,spontaneous combustion,pyrolysis and liquefacton of coal.Accurate quantitative determination of the free radical content in coal is important in studying the mechanism of coal pyrolysis and liquefaction.In this work,the stability and repeatability of quantitative measurement of total free radicals in coal by ESR method were investigated.With a standard curve method,the RSD of both stability and repeatability were less than 4%.The linearity of the... |
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| Keywords: | ESR standard curve method free radical coal |
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