直接汞分析仪测定煤中汞含量不确定度评定  

Evaluation of Uncertainty in Measurement of Mercury in Coal by Direct Mercury Analyzer

作　　者：杨常青[1] 张双双[1] 房立冬 康菲[1] 孟祥梅[1] 徐志彬[2] 

机构地区：[1]河北出入境检验检疫局京唐港办事处,河北唐山063600 [2]河北出入境检验检疫局曹妃甸办事处,河北唐山063600

出　　处：《煤炭技术》2016年第5期312-314,共3页Coal Technology

基　　金：国家质检总局科技项目(2014IK270)

摘　　要：对直接汞分析仪测定煤炭中汞含量过程中可能引入的不确定度进行分析和评定。采用棋盘取样法确定样品均匀性不确定度分量,用较严密的密度修正法评估校准溶液质量浓度变化的不确定度分量,用一般的线性拟合法和较严密的非线性拟合法评估校准曲线拟合浓度的不确定度分量。Uncertainties originated from the measurement of mercury content in the coals were analyzed and evaluated. Using the checkerboard sampling method to determine the uncertainty component of the sample homogeneities. The density correction method was used to assess uncertainty component of quality concentrations of the calibration solutions. The uncertainty component of calibration curve fitting were respectively assessed by the general linear fitting and the non-linear fitting.

关 键 词：棋盘法 密度修正法 非线性拟合法 

分 类 号：TQ533.1[化学工程—煤化学工程]