| 热重量法分析石墨成分 |
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| 引用本文： | 胡晓静,盛向军,赵恒英,赵守城.热重量法分析石墨成分[J].理化检验(化学分册),2002,38(9):443-445. |
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| 作者姓名： | 胡晓静 盛向军 赵恒英 赵守城 |
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| 作者单位： | 辽宁出入境检验检疫局,大连,116001 |
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| 摘 要： | 研究了用热重分析仪进行石墨成分分析的方法，摸索了仪器的适宜分析条件，并对试验结果进行了讨论。针对仪器系统误差对挥发分测定的影响，采用一无线性回归对测量数据进行了校正。方法的精密度和准确度试验证明，用热重量法可有效地应用于日常检验工作。
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| 关 键 词： | 热重量法 分析 石墨 挥发物 线性回归校正 热重量分析仪 |
| 文章编号： | 1001-4020(2002)09-0443-03 |
| 修稿时间： | 2001年1月8日 |
THERMOGRAVIMETRIC ANALYSIS OF GRAPHITE |
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| HU Xiao-jing,SHENG Xiang-jun,ZHAO Heng-ying,ZHAO Shou-cheng.THERMOGRAVIMETRIC ANALYSIS OF GRAPHITE[J].Physical Testing and Chemical Analysis Part B:Chemical Analgsis,2002,38(9):443-445. |
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| Authors: | HU Xiao-jing SHENG Xiang-jun ZHAO Heng-ying ZHAO Shou-cheng |
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| Abstract: | It was reported that by the use of TGA-601 thermogravimetric analyzer (Leco), various components of graphite (including moisture, volatile materials, ash and fixed carbion) could be determined simultaneously and automatically with a single sample, and 19 samples could be analyzed in a batch. The optimum conditions of operating this analyzer were tested. It was found that in the determination of volatile materials in graphite, there were deviations between the results obtained by TGA-601 analyzer and those obtained by GB standard method and corrections for systematic errors arrised were necessary. The results obtained by the TGA-601 analyzer were corrected by amending the regression coefficients a and b in the linear regression equation y i=a+bx i. Eleven samples of different volatile material contents were analyzed both by TGA-601 analyzer and GB standard method, and the corrected values of a and b were calculated statistically by regression analysis. It was proved that the instrumental method could be used effectively in routine analysis. |
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| Keywords: | Graphite Thermogravimetric analyzer Volatile material Linear regression correction |
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