红外光谱测定精TiCl_4中CH_2ClCOCl的含量及其不确定度评定  

Evaluation of Uncertainty in Determination of the Content of CH_2ClCOCl in TiCl_4 by Infrared Spectroscopy

作　　者：李青 宋光林 罗明 陆洋 马凯 

机构地区：[1]贵州省分析测试研究院,贵州贵阳550002

出　　处：《山东化工》2015年第13期60-62,共3页Shandong Chemical Industry

基　　金：国家科技部创新方法专项项目([2011]IM03070);贵州省省长基金项目黔省合字[2012]19号;国家国际科技合作专项资助(2011DFB41640);黔科合外G字[2012]703号

摘　　要：利用红外光谱对精Ti Cl4中CH2Cl COCl的含量进行了测定。回顾操作过程对其结果进行不确定评定,主要对取样、环境温度、湿度变化、标准曲线线性回归、测定的重复性、称量误差、标准物质纯度、标准储备液和标准溶液的配制、仪器示值等因素进行不确定度评定。通过不确定度评定得到精Ti Cl4中CH2Cl COCl含量的评估报告为:u(CH2Cl COCl)=(17.86±0.30)mg·kg-1,包含因子K=2,置信概率为95%。The content of CH2ClCOCl in TiCl4 were determined by infrared spectro- scopy. By reviewing the experiments process ,we assessed the uncertainty of the results which including the sampling, environmental temperature, humidity changes,the standard curve linear regression, the measurement repeatability, weighing error, standard material purity, standard stock solution, standard solution preparation and instrument indication. According to the assessment report, we obtained the CH2 ClCOCl content in the refined TiCl4 ： u（CH2Cl COCl）=（17.86±0.30）mg·kg^-1, factor K = 2, Confidence probability is 95%.

关 键 词：红外光谱 TICL4 CH2ClCOCl 不确定度 评定 

分 类 号：O657.3[理学—分析化学]