液相色谱法测定苹果中灭幼脲残留量的不确定度评估  

Uncertainty Evaluation of Determination of Chlorbenzuron Residues in Apple by Liquid Chromatography

作　　者：李云[1] 章颖 李牛江杰 庄琼 LI Yun;ZHANG Ying;LI Niujiangjie;ZHUANG Qiong(Anhui Institute of Product Quality Supervision and Inspection,Hefei 230000,China)

机构地区：[1]安徽省产品质量监督检验研究院,安徽合肥230000

出　　处：《食品安全导刊》2022年第17期55-57,共3页China Food Safety Magazine

摘　　要：目的:评定液相色谱法测定苹果中灭幼脲残留量的不确定度。方法:利用不确定度的数学模型,对可能影响到最终结果的不确定度因素进行评估,得到最终的扩展不确定度。结果:苹果中灭幼脲含量残留量为2.00 mg/kg,其扩展不确定度为0.046 8 mg/kg(k=2)。结论:标准溶液的配制、标准工作曲线的拟合、重复性测定、标准溶液的样品加标是测量不确定度的主要来源。Objective: To evaluate the uncertainty of determination of dichlorfenuron residues in apples by liquid chromatography. Method: Use the mathematical model of uncertainty to evaluate the uncertainty factors that may affect the final result, and obtain the final expanded uncertainty. Result: The residual content of diflubenzuron in apples was 2.00 mg/kg, and the expanded uncertainty was 0.046 8 mg/kg(k=2). Conclusion: The preparation of the standard solution, the fitting of the standard working curve, repeatability determination and the addition of standard samples to the standard solution are the main sources of measurement uncertainty.

关 键 词：苹果 灭幼脲 不确定度 

分 类 号：O657.72[理学—分析化学] TS255.7[理学—化学]