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| 超高效液相色谱-稳定性同位素稀释质谱法测定米线中乌洛托品的不确定度评估 | |
| 引用本文： | 徐 幸,张晓鸣,舒 平,张 燕,彭飞进. 超高效液相色谱-稳定性同位素稀释质谱法测定米线中乌洛托品的不确定度评估[J]. 食品科学, 2015, 36(16): 246-250. DOI: 10.7506/spkx1002-6630-201516047 |
| 作者姓名： | 徐 幸 张晓鸣 舒 平 张 燕 彭飞进 |
| 作者单位： | 1.江南大学食品学院，江苏 无锡 214122；2.大理州质量技术监督综合检测中心，云南 大理 671000 |
| 基金项目： | 云南省卫生厅制修订食品安全地方标准项目（云卫[2014]DB004） |
| 摘 要： | 采用超高效液相色谱-稳定性同位素稀释质谱法测定米线中的乌洛托品，对测试过程的不确定度来源进行系统分析，建立不确定度评估的数学模型，通过对不确定度各主要分量的分析计算，得出合成不确定度和扩展不确定度。当乌洛托品的测定结果为0.821 mg/kg时，扩展不确定度为0.079 mg/kg，k=2。该评估模型为同位素稀释质谱法的不确定度评估提供了参考依据。 |
| 关 键 词： | 稳定性同位素稀释质谱法 不确定度 米线 乌洛托品 |
Evaluation of Uncertainty in Determination of Urotropine in Rice Noodles by Ultra Performance Liquid Chromatography-Stable Isotope Dilution Mass Spectrometry |
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| XU Xing,ZHANG Xiaoming,SHU Ping,ZHANG Yan,PENG Feijin. Evaluation of Uncertainty in Determination of Urotropine in Rice Noodles by Ultra Performance Liquid Chromatography-Stable Isotope Dilution Mass Spectrometry[J]. Food Science, 2015, 36(16): 246-250. DOI: 10.7506/spkx1002-6630-201516047 | |
| Authors: | XU Xing ZHANG Xiaoming SHU Ping ZHANG Yan PENG Feijin |
| Affiliation: | 1. School of Food Science and Technology, Jiangnan University, Wuxi 214122, China;2. Dali Comprehensive Inspection Centre of Quality and Technical Supervision, Dali 671000, China |
| Abstract: | A method for the determination of urotropine in rice noodles by ultra performance liquid chromatography-stable isotope dilution mass spectrometry was developed. The mathematical model of uncertainty evaluation was established after the sources of uncertainty were systematically analyzed. Based on each uncertainty of the key factors during the analysis process, the combined and expanded uncertainties were evaluated. When the measurement result of urotropine was 0.821 mg/kg, the expanded uncertainty was 0.079 mg/kg (k = 2). This study can provide a reference basis for the uncertainty evaluation of isotope dilution mass spectrometry. |
| Keywords: | stable isotope dilution mass spectrometry uncertainty rice noodles urotropine |
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