顶空-气相色谱法测定亚麻籽油中溶剂残留量的不确定度分析
顶空-气相色谱法测定亚麻籽油中溶剂残留量的不确定度分析
目的分析顶空-气相色谱法测定亚麻籽油中的溶剂残留量的不确定度。方法应用因果图分析法分析溶剂残留量测量过程的不确定度来源, 通过建立数学模型量化不确定度的各主要分量, 计算合成不确定度和扩展不确定度。结果当亚麻籽油中溶剂残留量为20.3 mg/kg, 扩展不确定为2.0 mg/kg(k=2)。影响检测结果测量不确定度的最主要因素为标准曲线拟合。结论通过分析评定测量不确定度, 能够有效掌握实验测定结果的准确性和可信度, 确保检验工作的质量。
ObjectiveTo analyze the uncertainty for the determination of solvent residue in linseed oil by headspace-gas chromatography (HS-GC). MethodsThe sources of uncertainty in the measurement process of residual solvent were analyzed by causal diagram analysis. The main components of uncertainty were quantified by establishing a mathematical model, and the synthetic uncertainty and extended uncertainty were calculated. ResultsWhen the solvent residue in flaxseed oil was 20.3 mg/kg, the expansion uncertainty was 2.0 mg/kg (k=2). The most important factor affecting the measurement uncertainty was the standard curve fitting. ConclusionBy analyzing and evaluating the uncertainty of measurement, it can master the accuracy and reliability of the test results, and ensure the quality of the test work.
标题：顶空-气相色谱法测定亚麻籽油中溶剂残留量的不确定度分析
英文标题：Uncertainty evaluation for the determination of solvent residue inlinseed oil by headspace-gas chromatography
作者：
赵娅鸿 山西省食品质量安全监督检验研究院
中文关键词:顶空-气相色谱法,亚麻籽油,溶剂残留量,不确定度,
英文关键词:headspace-gas chromatography,linseed oil,solvent residue,uncertainty,
发表日期：2018-07-19
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