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目的:针对GB/T 22030-2008《车用乙醇汽油调和组分油》中铁含量的要求,介绍利用SH/T 0712-2002中原子吸收光谱法测定车用乙醇汽油调合组分油中铁含量的结果不确定度评定方法,为建立有效的质量控制方法提供科学依据。方法:确定和计算测定过程各不确定度分量,最后整体合成。结果:原子吸收光谱法测定车用乙醇汽油调合组分油中铁含量的扩展不确定度为0.001g/L,该测量结果可表述为(0.005±0.001)g/L,k=2。
Aim: According to the requirement of iron content in GB / T 22030-2008 “blending component oil for vehicle ethanol gasoline”, the content of iron in blending component gasoline of vehicle ethanol gasoline by using SH / T 0712-2002 by atomic absorption spectrometry Results of uncertainty assessment method for the establishment of effective quality control methods to provide a scientific basis. Methods: To determine and calculate the uncertainty components of the measurement process, the final overall synthesis. Results: The extended uncertainty of the determination of iron content in ethanol-gasoline blends by FAAS was 0.001 g / L. The results can be expressed as (0.005 ± 0.001) g / L, k = 2.