| 氧弹燃烧-离子色谱法测定煤中氯含量 |
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| 引用本文： | 刘建权,赵峰华,刘璟,李建国.氧弹燃烧-离子色谱法测定煤中氯含量[J].分析化学,2009,37(8). |
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| 作者姓名： | 刘建权 赵峰华 刘璟 李建国 |
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| 作者单位： | 1. 天津华北地质勘查总院,天津,300181;中国矿业大学,北京,100181
2. 中国矿业大学,北京,100181 |
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| 基金项目： | 教育部"新世纪优秀人才支持计划"项目(No.NCET-07-0801) 资助 |
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| 摘 要： | 建立了氧弹燃烧-离子色谱测定煤中氯含量的方法.在加有(NH4)2CO3溶液和过量氧气的氧弹中燃烧煤样,释放的氯被(NH4)2CO3溶液吸收,过滤溶液后, 采用离子色谱外标法测定滤液中氯的浓度,最后计算出煤中氯的含量.色谱工作条件:淋洗液为1.8 mmol/L Na2CO3与1.7 mmol/L NaHCO3混合液,流速1 mL/min;再生液为40 mmol/L H2SO4,流速0.5 mL/min;进样量20 μL.色谱标准工作曲线线性相关系数0.9996;10次测定1 mg/L Cl-标准溶液的均值为1.0012 mg/L,相对标准偏差为1.34%;8个煤样加标回收率为90.7%～104.3%;测定标准物质GBW11119 及GBW11120的相对误差分别为1.75%和1.36%;对比研究显示,氧弹燃烧-离子色谱测定8个煤样(除两个煤样外)氯含量结果远高于艾士卡剂混合熔样-离子色谱测定结果,表明艾士卡剂混合熔样过程由于煤样未处于完全密闭状态导致部分氯的散失.
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| 关 键 词： | 离子色谱 氧弹 氯 煤 |
Determination of Chlorine in Coal by Oxygen Bomb-Ion Chromatography |
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| LIU Jian-Quan,ZHAO Feng-Hua,LIU Jing,LI Jian-Guo.Determination of Chlorine in Coal by Oxygen Bomb-Ion Chromatography[J].Chinese Journal of Analytical Chemistry,2009,37(8). |
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| Authors: | LIU Jian-Quan ZHAO Feng-Hua LIU Jing LI Jian-Guo |
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| Institution: | LIU Jian-Quan1,2,ZHAO Feng-Hua2,LIU Jing2,LI Jian-Guo2 1(Tianjin North China Geological Exploration Institute,Tianjin 300181)2(China University of Mining and Technology(Beijing),Beijing 100181) |
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| Abstract: | A novel method is developed for the determination of Chlorine content in coal by oxygen bomb-ion chromatography.The coal sample was combusted in the oxygen bomb containing ammonium carbonate solution and enough pressed oxygen.The chlorites released from coal combustion were absorbed by ammonium carbonate solution,after filtration,the solution was analyzed by ion chromatography and chlorine content in coal was finally calculated.The working conditions of ion chromatography were as follows:mixture of 1.8 mmol... |
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| Keywords: | Ion chromatography oxygen bomb chlorine coal |
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