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.
出处
《广州化工》
CAS
2009年第5期153-154,160,共3页
GuangZhou Chemical Industry
关键词
微量法
石油产品
残炭含量
不确定度
评定
micro method
petroleum products
carbon residue
measurement uncertainty
evaluation
