微量法测定石油产品中残炭含量的不确定度评价  

Evaluation of the Uncertainty Measurement for the Determination of Carbon Residue in Petroleum Products by Micro Method

作　　者：邓全道 覃丽霞 刘灵芝 

机构地区：[1]钦州出入境检验检疫局,广西钦州535000

出　　处：《广州化工》2009年第5期153-154,160,共3页GuangZhou Chemical Industry

摘　　要：按照测量不确定度评定的通用规则,建立了数学模型,对微量法测定石油产品中残炭含量的测量不确定度进行了评定,分析了方法中的不确定度分量及其来源,计算了各分量的不确定度,最后计算出了检测结果的合成标准不确定度和扩展不确定度。检测结果和不确定度评定结果为(0.35±0.02)%,k=2。残炭质量称量引起的测量不确定度分量为最大。According to JJF1059 - 1999 ＂Evaluation and Expression of Uncertainty in Measurement＂, a mathematic model for the determination of carbon residue in petroleum products by micro method was established. The calculation formula was deduced. Some data were collected in the procedure of analyzing the sample and the uncertainties of various variables were calculated. The combined uncertainty and expanded uncertainty were finally obtained by synthesizing the uncertainties of various component variables. Results of determination and evaluation of the measurement uncertainty were （0. 35±0. 02） %, k = 2. The major source of uncertainty was the weighing of carbon residue.

关 键 词：微量法 石油产品 残炭含量 不确定度 评定 

分 类 号：TB9[一般工业技术—计量学] TH824.06[机械工程—测试计量技术及仪器]