摘要 依据植物油中游离棉酚的检测方法,建立了一种植物油中游离棉酚检测结果不确定度的数学模型,并对其检测过程中产生不确定度的主要来源进行了分析与评定。结果表明:高效液相色谱仪的性能、样品前处理的重复性和标准曲线的拟合对游离棉酚检测结果的不确定度的贡献较大,当植物油中游离棉酚含量为48mg/kg时,其扩展不确定度为5mg/kg(k=2)。 According to the detection method of free gossypol in vegetable oil,this paper establishes a mathematical model of uncertainty evaluation for determination of free gossypol in vegetable oil.The main sources of uncertaintyin measurement arising from procedure of testing were analyzed and evaluated.The evaluation results showed that the fitting of standard curve,the performance of liquid chromatograph and the repeatability of sample pretreatment made great contribution to the uncertainty of free gossypol detection results.When the content of free gossypol in edible oil was 48 mg/kg,the expanded uncertainty was5 mg/kg(k=2).
出处 《食品与机械》 北大核心 2021年第4期76-79,共4页 Food and Machinery
关键词 高效液相色谱 植物油 不确定度 游离棉酚 high performance liquid chromatography vegetable oil uncertainty free gossypol
