乳业科学与技术2025，Vol.48Issue(5)：67-71,5.DOI:10.7506/rykxyjs1671-5187-20250609-042
气相色谱-质谱联用测定乳粉中三聚氰胺残留量的不确定度评定
Uncertainty Evaluation for the Determination of Melamine Residue in Milk Powder by Gas Chromatography-Mass Spectrometry
张婷 1王舒婷 1李嘉 1车彦卓 1凌莉 1程用斌1
作者信息
- 1. 陕西省农业检验检测中心,陕西 西安 710000
- 折叠
摘要
Abstract
Objective:To evaluate the uncertainty for the determination of melamine residue in milk powder by gas chromatography-mass spectrometry(GC-MS).Methods:Following the Guidance on quantifying uncertainty in chemical analysis(CNAS-GL006:2019),a mathematical model was established to analyze and evaluate the sources of uncertainty in the determination of melamine residue in milk powder by GC-MS according to the Chinese National Standard Determination of melamine in raw milk and dairy products(GB/T 22238-2008).The combined standard uncertainty was calculated from the uncertainty components.Results:The melamine content of the milk powder sample was determined to be 2.090 mg/kg with an extended uncertainty of 0.182 mg/kg(k=2).Conclusion:The uncertainty mainly came from sample volume adjustment,sample recovery,standard solution preparation and curve fitting.关键词
三聚氰胺/气相色谱-质谱联用法/不确定度评定Key words
melamine/gas chromatography-mass spectrometry/evaluation of uncertainty分类
轻工纺织引用本文复制引用
张婷,王舒婷,李嘉,车彦卓,凌莉,程用斌..气相色谱-质谱联用测定乳粉中三聚氰胺残留量的不确定度评定[J].乳业科学与技术,2025,48(5):67-71,5.
