| 化学转化顶空气相色谱法测定煤中碳酸盐二氧化碳 |
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| 引用本文： | 马茜. 化学转化顶空气相色谱法测定煤中碳酸盐二氧化碳[J]. 分析化学, 2001, 29(10): 1202-1204 |
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| 作者姓名： | 马茜 |
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| 作者单位： | 太原理工大学化学工程与技术学院 |
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| 摘 要： | 提出了一种测定煤中碳酸盐CO2的方法。煤样放入密闭体系中，注入盐酸，在室温下反应。当气液两相达到平衡后，取一定体积的液上气体进行色谱分析。通过测定气相中CO2含量，得出煤中碳酸盐CO2含量。方法简便、快速，相对标准偏差为2.4%；加标回收率在96.3%-102.5%之间。用于实际样品分析，结果较为满意。
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| 关 键 词： | 顶空气相色谱法 煤 碳酸盐二氧化碳 测定 化学转化 元素分析 |
Determination of Carbonate CO2 in Coal by Chemical Conversion Headspace Gas Chromatography |
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| Ma Qian. Determination of Carbonate CO2 in Coal by Chemical Conversion Headspace Gas Chromatography[J]. Chinese Journal of Analytical Chemistry, 2001, 29(10): 1202-1204 |
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| Authors: | Ma Qian |
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| Abstract: | A method for the determination of carbonate CO2 in coal has been developed. The sample was put into a close system, then the HCI solution was injected. The reaction took place at mom temperature. When two phase of gas and liquid attained equilibrium, the carbonate CO2 in coal was calculated by the determination of CO2 in headspace gas. The method was simple and fast. The relative standard deviation was 2.4% and the recoveries were in the range of 96.3% -102.5%. |
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| Keywords: | Headspace gas chromatography coal carbonate carbon dioxide |
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