热重量法分析石墨成分  

THERMOGRAVIMETRIC ANALYSIS OF GRAPHITE

作　　者：胡晓静[1] 盛向军[1] 赵恒英[1] 赵守城[1] 

机构地区：[1]辽宁出入境检验检疫局,大连116001

出　　处：《理化检验（化学分册）》2002年第9期443-445,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

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 ,采用一元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 。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.

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 

分 类 号：TQ165[化学工程—高温制品工业]