红外光谱法测定精四氯化钛中三氯乙酰氯及其不确定度评定  

Evaluation of Uncertainty in Determination of Trichloroacetyl Chloride in Refined Titanium Tetrachloride by Infrared Spectroscopy

作　　者：李青 宋光林 陆洋 

机构地区：[1]贵州省分析测试研究院,贵州贵阳550002

出　　处：《钛工业进展》2015年第4期37-39,共3页Titanium Industry Progress

基　　金：国家科技部创新方法专项项目(2011IM030700);国家国际科技合作专项资助项目(2011DFB41640);贵州省省长基金项目(黔省合字[2012]19号);贵州省科技厅国际合作项目(黔科合外G字[2012]7033号)

摘　　要：利用红外光谱建立了精四氯化钛中三氯乙酰氯含量的分析方法,并对该方法的测定结果进行了不确定度评定。由标准工作液的测定而得到其线性方程为y=9.199 5x+1.740 8,相关系数R2=0.999 9。利用红外光谱测得样品中的精四氯化钛中三氯乙酰氯含量为3.63±0.046 mg·kg-1。这种方法测量精度较高,能够满足测量要求。不确定度主要来源于标准曲线的拟合,在实验中对标准溶液的配制过程要格外严格控制,数据处理时要找寻最优化的数据处理模型。An analysis method for measuring trichloroacetyl chloride content in refined titanium tetrachloride was established by infrared spectroscopy, and the uncertainty was also evaluated. The linear equation which obtained by the determination of the standard working fluid was y =9. 199 5x ＋ 1. 740 8, the correlation coefficient R2 =0. 999 9. The trichloroacetyl chloride content in titanium tetrachloride was 3.63 ± 0. 046 mg·kg-1 measured by infrared spectroscopy. The analysis result shows that the method can meet the requirements of measurement accuracy. The uncertainty is mainly derived from the standard curve fitting. In the experiment, the preparation process of the standard solution should be strictly controlled, and the data processing model should be optimized.

关 键 词：红外光谱 四氯化钛 三氯乙酰氯 不确定度 

分 类 号：O657.33[理学—分析化学]