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通过测定柴油的总硫含量,按照测量不确定度的传播规律建立数学模型,讨论了柴油的总硫含量测量结果的不确定度主要来源于标准曲线、密度计的计量性、样品稀释和进样量,其中标准曲线引入的不确定度最大。通过对各相对不确定度分量分析计算,得到合成不确定度(uc)和扩展不确定度(U)。
By measuring the total sulfur content of diesel oil and establishing the mathematical model according to the propagation law of the measurement uncertainty, the uncertainty of the total sulfur content of diesel oil is discussed. The uncertainty of the measurement results mainly comes from the standard curve, the densification of the densitometer, the sample dilution and injection Quantity, of which the standard curve to introduce the greatest uncertainty. Through the relative analysis of the relative uncertainty components, the synthesis of uncertainty (uc) and extended uncertainty (U).